57387656 has 16 divisors (see below), whose sum is σ = 108389340. Its totient is φ = 28483840.

The previous prime is 57387647. The next prime is 57387661. The reversal of 57387656 is 65678375.

It is a happy number.

57387656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 54612100 + 2775556 = 7390^2 + 1666^2 .

It is a super-2 number, since 2×57387656² = 6586686122348672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57387656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25085 + ... + 27276.

Almost surely, 2^57387656 is an apocalyptic number.

It is an amenable number.

57387656 is a deficient number, since it is larger than the sum of its proper divisors (51001684).

57387656 is a wasteful number, since it uses less digits than its factorization.

57387656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52504 (or 52500 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 47.

The square root of 57387656 is about 7575.4640781935. The cubic root of 57387656 is about 385.7205956770.

The spelling of 57387656 in words is "fifty-seven million, three hundred eighty-seven thousand, six hundred fifty-six".