57331372 has 36 divisors (see below), whose sum is σ = 118933920. Its totient is φ = 24102624.

The previous prime is 57331367. The next prime is 57331381. The reversal of 57331372 is 27313375.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7629 + ... + 13147.

It is an arithmetic number, because the mean of its divisors is an integer number (3303720).

Almost surely, 2^57331372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57331372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59466960).

57331372 is an abundant number, since it is smaller than the sum of its proper divisors (61602548).

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

57331372 is a wasteful number, since it uses less digits than its factorization.

57331372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590 (or 5581 counting only the distinct ones).

The product of its digits is 13230, while the sum is 31.

The square root of 57331372 is about 7571.7482789644. The cubic root of 57331372 is about 385.5944535712.

The spelling of 57331372 in words is "fifty-seven million, three hundred thirty-one thousand, three hundred seventy-two".