57555664 has 20 divisors (see below), whose sum is σ = 111956004. Its totient is φ = 28663808.

The previous prime is 57555607. The next prime is 57555703. The reversal of 57555664 is 46655575.

It can be written as a sum of positive squares in 2 ways, for example, as 46131264 + 11424400 = 6792^2 + 3380^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57555664.

It is a congruent number.

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, 2887 + ... + 11110.

Almost surely, 2^57555664 is an apocalyptic number.

It is an amenable number.

57555664 is a deficient number, since it is larger than the sum of its proper divisors (54400340).

57555664 is a wasteful number, since it uses less digits than its factorization.

57555664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14262 (or 14256 counting only the distinct ones).

The product of its digits is 630000, while the sum is 43.

The square root of 57555664 is about 7586.5449316537. The cubic root of 57555664 is about 386.0966405901.

The spelling of 57555664 in words is "fifty-seven million, five hundred fifty-five thousand, six hundred sixty-four".