57147972 has 96 divisors (see below), whose sum is σ = 163322880. Its totient is φ = 15189120.

The previous prime is 57147967. The next prime is 57147983. The reversal of 57147972 is 27974175.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97063 + ... + 97649.

It is an arithmetic number, because the mean of its divisors is an integer number (1701280).

Almost surely, 2^57147972 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 57147972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81661440).

57147972 is an abundant number, since it is smaller than the sum of its proper divisors (106174908).

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

57147972 is a wasteful number, since it uses less digits than its factorization.

57147972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 679 counting only the distinct ones).

The product of its digits is 123480, while the sum is 42.

The square root of 57147972 is about 7559.6277686140. The cubic root of 57147972 is about 385.1828489974.

The spelling of 57147972 in words is "fifty-seven million, one hundred forty-seven thousand, nine hundred seventy-two".