57131908 has 12 divisors (see below), whose sum is σ = 104328000. Its totient is φ = 27323912.

The previous prime is 57131897. The next prime is 57131909. The reversal of 57131908 is 80913175.

It is a happy number.

57131908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (57131909) by changing a digit.

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, 310408 + ... + 310591.

It is an arithmetic number, because the mean of its divisors is an integer number (8694000).

Almost surely, 2^57131908 is an apocalyptic number.

It is an amenable number.

57131908 is a deficient number, since it is larger than the sum of its proper divisors (47196092).

57131908 is a wasteful number, since it uses less digits than its factorization.

57131908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621026 (or 621024 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 57131908 is about 7558.5652077626. The cubic root of 57131908 is about 385.1467546448.

The spelling of 57131908 in words is "fifty-seven million, one hundred thirty-one thousand, nine hundred eight".