37590721 has 16 divisors (see below), whose sum is σ = 45654400. Its totient is φ = 30233088.

The previous prime is 37590719. The next prime is 37590731. The reversal of 37590721 is 12709573.

37590721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 10-Lehmer number, since φ(37590721) divides (37590721-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 37590721 - 2¹ = 37590719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37590731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13201 + ... + 15793.

It is an arithmetic number, because the mean of its divisors is an integer number (2853400).

Almost surely, 2^37590721 is an apocalyptic number.

It is an amenable number.

37590721 is a deficient number, since it is larger than the sum of its proper divisors (8063679).

37590721 is a wasteful number, since it uses less digits than its factorization.

37590721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 37590721 is about 6131.1272209929. The cubic root of 37590721 is about 334.9861760093.

The spelling of 37590721 in words is "thirty-seven million, five hundred ninety thousand, seven hundred twenty-one".