57387812 has 12 divisors (see below), whose sum is σ = 101700480. Its totient is φ = 28330536.

The previous prime is 57387769. The next prime is 57387821. The reversal of 57387812 is 21878375.

It is a super-2 number, since 2×57387812² = 6586721932294688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 57387812.

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, 90488 + ... + 91119.

It is an arithmetic number, because the mean of its divisors is an integer number (8475040).

Almost surely, 2^57387812 is an apocalyptic number.

It is an amenable number.

57387812 is a deficient number, since it is larger than the sum of its proper divisors (44312668).

57387812 is a wasteful number, since it uses less digits than its factorization.

57387812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181690 (or 181688 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 57387812 is about 7575.4743745854. The cubic root of 57387812 is about 385.7209451852.

The spelling of 57387812 in words is "fifty-seven million, three hundred eighty-seven thousand, eight hundred twelve".