57311040 has 56 divisors (see below), whose sum is σ = 181965600. Its totient is φ = 15282688.

The previous prime is 57311027. The next prime is 57311057. The reversal of 57311040 is 4011375.

It is a junction number, because it is equal to n+sod(n) for n = 57310998 and 57311016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28890 + ... + 30809.

Almost surely, 2^57311040 is an apocalyptic number.

It is an amenable number.

57311040 is an abundant number, since it is smaller than the sum of its proper divisors (124654560).

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

57311040 is a wasteful number, since it uses less digits than its factorization.

57311040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59719 (or 59709 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 57311040 is about 7570.4055373540. The cubic root of 57311040 is about 385.5488657710.

The spelling of 57311040 in words is "fifty-seven million, three hundred eleven thousand, forty".