56979015 has 12 divisors (see below), whose sum is σ = 91213224. Its totient is φ = 30373216.

The previous prime is 56978989. The next prime is 56979029. The reversal of 56979015 is 51097965.

It is not a de Polignac number, because 56979015 - 2⁵ = 56978983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28261 + ... + 30209.

It is an arithmetic number, because the mean of its divisors is an integer number (7601102).

Almost surely, 2^56979015 is an apocalyptic number.

56979015 is a deficient number, since it is larger than the sum of its proper divisors (34234209).

56979015 is an frugal number, since it uses more digits than its factorization.

56979015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 56979015 is about 7548.4445417583. Note that the first 3 decimals coincide. The cubic root of 56979015 is about 384.8028787948.

The spelling of 56979015 in words is "fifty-six million, nine hundred seventy-nine thousand, fifteen".