57811864 has 24 divisors (see below), whose sum is σ = 119149380. Its totient is φ = 26277680.

The previous prime is 57811861. The next prime is 57811867. The reversal of 57811864 is 46811875.

It is an interprime number because it is at equal distance from previous prime (57811861) and next prime (57811867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57811861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28894 + ... + 30829.

Almost surely, 2^57811864 is an apocalyptic number.

It is an amenable number.

57811864 is an abundant number, since it is smaller than the sum of its proper divisors (61337516).

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

57811864 is a wasteful number, since it uses less digits than its factorization.

57811864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59751 (or 59736 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 57811864 is about 7603.4113396554. The cubic root of 57811864 is about 386.6686755081.

The spelling of 57811864 in words is "fifty-seven million, eight hundred eleven thousand, eight hundred sixty-four".