365 (three hundred
ndsixty-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
364 and preceding
366
__NOTOC__
Year 366 ( CCCLXVI) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Gratianus and Dagalaifus (or, less frequently, year 1119 ''Ab urbe condita''). The denomina ...
.
Mathematics
365 is a
semiprime
In mathematics, a semiprime is a natural number that is the product of exactly two prime numbers. The two primes in the product may equal each other, so the semiprimes include the squares of prime numbers.
Because there are infinitely many prime ...
centered square number. It is also the fifth
38 -gonal number.
For multiplication, it is calculated as
. Both
5 and
73 are prime numbers.
It is the smallest number that has more than one expression as a sum of consecutive
square number
In mathematics, a square number or perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself. For example, 9 is a square number, since it equals and can be written as .
The u ...
s:
:
:
There are no known primes with period 365, while at least one prime with each of the periods 1 to 364 is known.
Timekeeping
There are 365.2422
solar days in the
mean tropical year. Several
solar calendar
A solar calendar is a calendar whose dates indicate the season or almost equivalently the apparent position of the Sun relative to the stars. The Gregorian calendar, widely accepted as a standard in the world, is an example of a solar calendar.
...
s have a year containing 365 days. Related to this, in
Ontario
Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Ca ...
, the
driver's license
A driver's license is a legal authorization, or the official document confirming such an authorization, for a specific individual to operate one or more types of motorized vehicles—such as motorcycles, cars, trucks, or buses—on a publi ...
learner's permit used to be called "365" because it was valid for only 366 days. Financial and scientific calculations often use a
365-day calendar to simplify daily rates.
Religious meanings
Judeo-Christian
In the
Jewish
Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ...
faith there are 365 "
negative commandments". Also, the Bible states that
Enoch lived for 365 years before
entering heaven alive (see ).
Gnosticism
The letters of the deity
Abraxas, in the
Greek notation, make up the number 365. This number was subsequently viewed as signifying the levels of
heaven
Heaven or the heavens, is a common religious cosmological or transcendent supernatural place where beings such as deities, angels, souls, saints, or venerated ancestors are said to originate, be enthroned, or reside. According to the belie ...
.
References
{{Integers, 3
Integers