57556157932 has 144 divisors (see below), whose sum is σ = 132047677440. Its totient is φ = 21734189568.

The previous prime is 57556157903. The next prime is 57556157951. The reversal of 57556157932 is 23975165575.

It is a happy number.

It is a super-2 number, since 2×57556157932² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4990869 + ... + 5002387.

It is an arithmetic number, because the mean of its divisors is an integer number (916997760).

Almost surely, 2^57556157932 is an apocalyptic number.

57556157932 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57556157932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66023838720).

57556157932 is an abundant number, since it is smaller than the sum of its proper divisors (74491519508).

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

57556157932 is a wasteful number, since it uses less digits than its factorization.

57556157932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11640 (or 11631 counting only the distinct ones).

The product of its digits is 9922500, while the sum is 55.

The spelling of 57556157932 in words is "fifty-seven billion, five hundred fifty-six million, one hundred fifty-seven thousand, nine hundred thirty-two".