57564918 has 20 divisors (see below), whose sum is σ = 128988420. Its totient is φ = 19188252.

The previous prime is 57564911. The next prime is 57564959. The reversal of 57564918 is 81946575.

57564918 is a `hidden beast` number, since 575 + 64 + 9 + 18 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57564911) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 177508 + ... + 177831.

It is an arithmetic number, because the mean of its divisors is an integer number (6449421).

Almost surely, 2^57564918 is an apocalyptic number.

57564918 is an abundant number, since it is smaller than the sum of its proper divisors (71423502).

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

57564918 is a wasteful number, since it uses less digits than its factorization.

57564918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355353 (or 355344 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 57564918 is about 7587.1548026912. The cubic root of 57564918 is about 386.1173321351.

The spelling of 57564918 in words is "fifty-seven million, five hundred sixty-four thousand, nine hundred eighteen".