37 (number)

37[1] (thirty-seven) is the natural number following 36 and preceding 38.

37 is a prime number,[2] a sexy prime, and a Padovan prime 37 is the first irregular prime with irregularity index of 1.

[3] 37 is the smallest non-supersingular prime in moonshine theory.

37 is also an emirp because it remains prime when its digits are reversed.

The secretary problem is also known as the 37% rule, since