57117372 has 48 divisors (see below), whose sum is σ = 149775360. Its totient is φ = 16809408.

The previous prime is 57117367. The next prime is 57117451. The reversal of 57117372 is 27371175.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4372 + ... + 11547.

It is an arithmetic number, because the mean of its divisors is an integer number (3120320).

Almost surely, 2^57117372 is an apocalyptic number.

57117372 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

57117372 is an abundant number, since it is smaller than the sum of its proper divisors (92657988).

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

57117372 is a wasteful number, since it uses less digits than its factorization.

57117372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15962 (or 15960 counting only the distinct ones).

The product of its digits is 10290, while the sum is 33.

The square root of 57117372 is about 7557.6035884399. The cubic root of 57117372 is about 385.1140877383.

The spelling of 57117372 in words is "fifty-seven million, one hundred seventeen thousand, three hundred seventy-two".