56879978 has 16 divisors (see below), whose sum is σ = 88598016. Its totient is φ = 27358320.

The previous prime is 56879959. The next prime is 56880029. The reversal of 56879978 is 87997865.

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, 8075 + ... + 13377.

It is an arithmetic number, because the mean of its divisors is an integer number (5537376).

Almost surely, 2^56879978 is an apocalyptic number.

56879978 is a deficient number, since it is larger than the sum of its proper divisors (31718038).

56879978 is a wasteful number, since it uses less digits than its factorization.

56879978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509.

The product of its digits is 7620480, while the sum is 59.

The square root of 56879978 is about 7541.8815954641. The cubic root of 56879978 is about 384.5798035454.

The spelling of 56879978 in words is "fifty-six million, eight hundred seventy-nine thousand, nine hundred seventy-eight".