57231912 has 32 divisors (see below), whose sum is σ = 149302080. Its totient is φ = 18247680.

The previous prime is 57231883. The next prime is 57231919. The reversal of 57231912 is 21913275.

It is a self number, because there is not a number n which added to its sum of digits gives 57231912.

It is not an unprimeable number, because it can be changed into a prime (57231919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51289 + ... + 52392.

It is an arithmetic number, because the mean of its divisors is an integer number (4665690).

Almost surely, 2^57231912 is an apocalyptic number.

It is an amenable number.

57231912 is an abundant number, since it is smaller than the sum of its proper divisors (92070168).

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

57231912 is a wasteful number, since it uses less digits than its factorization.

57231912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103713 (or 103709 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 57231912 is about 7565.1775920992. The cubic root of 57231912 is about 385.3713446403.

The spelling of 57231912 in words is "fifty-seven million, two hundred thirty-one thousand, nine hundred twelve".