57381912 has 64 divisors (see below), whose sum is σ = 182169600. Its totient is φ = 16394400.

The previous prime is 57381911. The next prime is 57381913. The reversal of 57381912 is 21918375.

57381912 is a `hidden beast` number, since 573 + 81 + 9 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (57381911) and next prime (57381913).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57381911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17464 + ... + 20487.

It is an arithmetic number, because the mean of its divisors is an integer number (2846400).

Almost surely, 2^57381912 is an apocalyptic number.

It is an amenable number.

57381912 is an abundant number, since it is smaller than the sum of its proper divisors (124787688).

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

57381912 is a wasteful number, since it uses less digits than its factorization.

57381912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37973 (or 37963 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 57381912 is about 7575.0849500187. The cubic root of 57381912 is about 385.7077261671.

The spelling of 57381912 in words is "fifty-seven million, three hundred eighty-one thousand, nine hundred twelve".