Tuesday, May 1, 2012

365

365 = 5 x 73.

365 is 101101101 in base 2 (binary). It is 555 in base 8.

365 is a centered square number and a centered tridecagonal number (A051865).

365 is the smallest number that can be written as a sum of consecutive squares in more than one way: 365 = 142 + 132 = 122 + 112 + 102.

365 has two representations as a sum of two squares: 365 = 22 + 192 = 132 + 142.

365 is the hypotenuse of two primitive Pythagorean triples: 3652 = 272 + 3642 = 762 + 3572.


365 is the most frequent number of days in a year.

Source: What's Special About This Number?

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