57431936 has 16 divisors (see below), whose sum is σ = 114415440. Its totient is φ = 28715904.

The previous prime is 57431923. The next prime is 57431953. The reversal of 57431936 is 63913475.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 57431936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224216 + ... + 224471.

It is an arithmetic number, because the mean of its divisors is an integer number (7150965).

Almost surely, 2^57431936 is an apocalyptic number.

It is an amenable number.

57431936 is a deficient number, since it is larger than the sum of its proper divisors (56983504).

57431936 is an equidigital number, since it uses as much as digits as its factorization.

57431936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448701 (or 448689 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 57431936 is about 7578.3861078728. The cubic root of 57431936 is about 385.8197768028.

The spelling of 57431936 in words is "fifty-seven million, four hundred thirty-one thousand, nine hundred thirty-six".