57445864 has 16 divisors (see below), whose sum is σ = 123098400. Its totient is φ = 24619632.

The previous prime is 57445859. The next prime is 57445903. The reversal of 57445864 is 46854475.

It is a self number, because there is not a number n which added to its sum of digits gives 57445864.

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, 512854 + ... + 512965.

It is an arithmetic number, because the mean of its divisors is an integer number (7693650).

Almost surely, 2^57445864 is an apocalyptic number.

It is an amenable number.

57445864 is an abundant number, since it is smaller than the sum of its proper divisors (65652536).

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

57445864 is a wasteful number, since it uses less digits than its factorization.

57445864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025832 (or 1025828 counting only the distinct ones).

The product of its digits is 537600, while the sum is 43.

The square root of 57445864 is about 7579.3049813291. The cubic root of 57445864 is about 385.8509630724.

The spelling of 57445864 in words is "fifty-seven million, four hundred forty-five thousand, eight hundred sixty-four".