56915418 has 16 divisors (see below), whose sum is σ = 130092480. Its totient is φ = 16261536.

The previous prime is 56915407. The next prime is 56915423. The reversal of 56915418 is 81451965.

It is a super-2 number, since 2×56915418² = 6478729612229448, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677523 + ... + 677606.

It is an arithmetic number, because the mean of its divisors is an integer number (8130780).

Almost surely, 2^56915418 is an apocalyptic number.

56915418 is an abundant number, since it is smaller than the sum of its proper divisors (73177062).

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

56915418 is a wasteful number, since it uses less digits than its factorization.

56915418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355141.

The product of its digits is 43200, while the sum is 39.

The square root of 56915418 is about 7544.2307758976. The cubic root of 56915418 is about 384.6596598733.

The spelling of 56915418 in words is "fifty-six million, nine hundred fifteen thousand, four hundred eighteen".