57391408 has 20 divisors (see below), whose sum is σ = 112345240. Its totient is φ = 28399104.

The previous prime is 57391393. The next prime is 57391459. The reversal of 57391408 is 80419375.

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, 16938 + ... + 20041.

It is an arithmetic number, because the mean of its divisors is an integer number (5617262).

Almost surely, 2^57391408 is an apocalyptic number.

It is an amenable number.

57391408 is a deficient number, since it is larger than the sum of its proper divisors (54953832).

57391408 is a wasteful number, since it uses less digits than its factorization.

57391408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37084 (or 37078 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 57391408 is about 7575.7117157400. The cubic root of 57391408 is about 385.7290016203.

The spelling of 57391408 in words is "fifty-seven million, three hundred ninety-one thousand, four hundred eight".