57115812 has 24 divisors (see below), whose sum is σ = 143522176. Its totient is φ = 17574048.

The previous prime is 57115811. The next prime is 57115813. The reversal of 57115812 is 21851175.

It is an interprime number because it is at equal distance from previous prime (57115811) and next prime (57115813).

It is a self number, because there is not a number n which added to its sum of digits gives 57115812.

It is not an unprimeable number, because it can be changed into a prime (57115811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182908 + ... + 183219.

Almost surely, 2^57115812 is an apocalyptic number.

57115812 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

57115812 is an abundant number, since it is smaller than the sum of its proper divisors (86406364).

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

57115812 is a wasteful number, since it uses less digits than its factorization.

57115812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366147 (or 366145 counting only the distinct ones).

The product of its digits is 2800, while the sum is 30.

The square root of 57115812 is about 7557.5003804168. The cubic root of 57115812 is about 385.1105816045.

Adding to 57115812 its reverse (21851175), we get a palindrome (78966987).

The spelling of 57115812 in words is "fifty-seven million, one hundred fifteen thousand, eight hundred twelve".