57258564 has 24 divisors (see below), whose sum is σ = 145749408. Its totient is φ = 17351040.

The previous prime is 57258559. The next prime is 57258577. The reversal of 57258564 is 46585275.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216757 + ... + 217020.

It is an arithmetic number, because the mean of its divisors is an integer number (6072892).

Almost surely, 2^57258564 is an apocalyptic number.

It is an amenable number.

57258564 is an abundant number, since it is smaller than the sum of its proper divisors (88490844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57258564 is a wasteful number, since it uses less digits than its factorization.

57258564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433795 (or 433793 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 57258564 is about 7566.9388790977. The cubic root of 57258564 is about 385.4311558121.

Subtracting from 57258564 its reverse (46585275), we obtain a square (10673289 = 3267²).

The spelling of 57258564 in words is "fifty-seven million, two hundred fifty-eight thousand, five hundred sixty-four".