365 (number)

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Cardinal	365 three hundred [and] sixty-five
Ordinal	365th three hundred [and] sixty-fifth
Factorization	$5\; cdot\; 73$
Divisors	5, 73
Roman numeral	CCCLXV
Prefixes	triacosiakaihexacontakaipenta- (Greek)
Binary	101101101
Octal	555
Duodecimal	265
Hexadecimal	16D

Previous number: 364 Next number: 366

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:

$365\; =\; 13^2\; +\; 14^2$

$=\; 10^2\; +\; 11^2\; +\; 12^2.$

Timekeeping

There are 365.2422 solar 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 365 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.

References

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Last updated on Tuesday April 08, 2008 at 12:04:33 PDT (GMT -0700)
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