57621164 has 12 divisors (see below), whose sum is σ = 105221424. Its totient is φ = 27557904.

The previous prime is 57621127. The next prime is 57621191. The reversal of 57621164 is 46112675.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 57621164.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313067 + ... + 313250.

It is an arithmetic number, because the mean of its divisors is an integer number (8768452).

Almost surely, 2^57621164 is an apocalyptic number.

It is an amenable number.

57621164 is a deficient number, since it is larger than the sum of its proper divisors (47600260).

57621164 is a wasteful number, since it uses less digits than its factorization.

57621164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626344 (or 626342 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 57621164 is about 7590.8605572754. The cubic root of 57621164 is about 386.2430480904.

The spelling of 57621164 in words is "fifty-seven million, six hundred twenty-one thousand, one hundred sixty-four".