365 (number)

← 364 366 → 365
List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	three hundred [and] sixty five
Ordinal	365th (three hundred [and] sixty-fifth)
Factorization	$5 \cdot 73$
Roman numeral	CCCLXV
Binary	1011011012
Octal	5558
Duodecimal	26512
Hexadecimal	16D16

365 (three hundred [and] sixty five) is the natural number following 364 and preceding 366.

Mathematics

365 is a semiprime centered square number. It is also the fifth 38-gonal number.

It is the smallest number which has more than one expression as a sum of consecutive square numbers:

$365 = 13^2 + 14^2$

$365 = 10^2 + 11^2 + 12^2$

Timekeeping

There are 365.2424solar days in the mean tropical year. Several solar calendars have a year containing 365 days. Related to this, in Ontario, the driver's license 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

Judaism

In the Jewish faith there are 365 "negative commandments".

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.