57156564 has 96 divisors (see below), whose sum is σ = 148619520. Its totient is φ = 17031168.

The previous prime is 57156563. The next prime is 57156569. The reversal of 57156564 is 46565175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57156563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296052 + ... + 296244.

It is an arithmetic number, because the mean of its divisors is an integer number (1548120).

Almost surely, 2^57156564 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 57156564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74309760).

57156564 is an abundant number, since it is smaller than the sum of its proper divisors (91462956).

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

57156564 is a wasteful number, since it uses less digits than its factorization.

57156564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 287 counting only the distinct ones).

The product of its digits is 126000, while the sum is 39.

The square root of 57156564 is about 7560.1960292045. The cubic root of 57156564 is about 385.2021516665.

The spelling of 57156564 in words is "fifty-seven million, one hundred fifty-six thousand, five hundred sixty-four".