245 (two hundred
ndforty-five) is the
natural number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country").
Numbers used for counting are called '' cardinal ...
following
244 and preceding
246.
In mathematics
245 is:
*a
composite number
A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor
In mathematics, a divisor of an integer n, also called a factor ...
.
*a
stella octangula number.
*palindromic in bases 34 (77
34) and 48 (55
48)
*a
Harshad number
In mathematics, a harshad number (or Niven number) in a given number base is an integer that is divisible by the sum of its digits when written in that base.
Harshad numbers in base are also known as -harshad (or -Niven) numbers.
Harshad number ...
in bases 7, 9, 11, 15, 31, 35, 36 (and 14 other bases).
*the aliquot sum of any of these numbers: 723, 1195, 2563, 3859,
*part of the 97-aliquot tree.
4624, 4893, 2595, 1581, 723, 245
,
In online public access (library) catalogs
In the
MARC Marc or MARC may refer to:
People
* Marc (given name), people with the first name
* Marc (surname), people with the family name
Acronyms
* MARC standards, a data format used for library cataloging,
* MARC Train, a regional commuter rail system of ...
format for records in
online public access (library) catalogs, in which each type of information about a book (or other library material) is identified with a 3-digit number, 245 identifies the title of the item; most library catalog software requires that each record have at least a 245 tag, even if no other information is entered about the item.
In other fields
* The number of Jewish singers who returned from captivity in Babylon in c. 538 BCE following the rise of
Cyrus the Great
Cyrus II of Persia (; peo, 𐎤𐎢𐎽𐎢𐏁 ), commonly known as Cyrus the Great, was the founder of the Achaemenid Empire, the first Persian empire. Schmitt Achaemenid dynasty (i. The clan and dynasty) Under his rule, the empire embraced ...
and the
Persian Empire
The Achaemenid Empire or Achaemenian Empire (; peo, 𐎧𐏁𐏂, , ), also called the First Persian Empire, was an ancient Iranian empire founded by Cyrus the Great in 550 BC. Based in Western Asia, it was contemporarily the largest emp ...
. ''...besides their male and female slaves, of whom there were seven thousand three hundred thirty-seven; and they had two hundred forty-five singers, male and female. They had seven hundred thirty-six horses, two hundred forty-five mules, four hundred thirty-five camels, and six thousand seven hundred twenty donkeys.'' (see —Also, an ''almost'' identical reference in states that there were only 200 singers, and that the slaves were "servants").
* 245T or 2,4,5-T is a common abbreviation for the widely used herbicide
2,4,5-Trichlorophenoxyacetic acid.
*"245" is the name of a jazz instrumental by
Eric Dolphy
Eric Allan Dolphy Jr. (June 20, 1928 – June 29, 1964) was an American jazz alto saxophonist, bass clarinetist and flautist. On a few occasions, he also played the clarinet and piccolo. Dolphy was one of several multi-instrumentalists to ga ...
, featured on his 1960 album ''
Outward Bound
Outward Bound (OB) is an international network of outdoor education organizations that was founded in the United Kingdom by Lawrence Holt and Kurt Hahn in 1941. Today there are organizations, called schools, in over 35 countries which are att ...
''.
*245 is the international
country calling code
Country calling codes or country dial-in codes are telephone number prefixes for reaching telephone subscribers in the networks of the member countries or regions of the International Telecommunication Union (ITU). The codes are defined by the ...
for
Guinea-Bissau
Guinea-Bissau ( ; pt, Guiné-Bissau; ff, italic=no, 𞤘𞤭𞤲𞤫 𞤄𞤭𞤧𞤢𞥄𞤱𞤮, Gine-Bisaawo, script=Adlm; Mandinka: ''Gine-Bisawo''), officially the Republic of Guinea-Bissau ( pt, República da Guiné-Bissau, links=no ) ...
.
References
{{Integers, 2
Integers