56117979 has 6 divisors (see below), whose sum is σ = 81059316. Its totient is φ = 37411980.

The previous prime is 56117959. The next prime is 56117993. The reversal of 56117979 is 97971165.

56117979 is a `hidden beast` number, since 561 + 17 + 9 + 79 = 666.

It is not a de Polignac number, because 56117979 - 2¹¹ = 56115931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56117939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3117657 + ... + 3117674.

It is an arithmetic number, because the mean of its divisors is an integer number (13509886).

Almost surely, 2^56117979 is an apocalyptic number.

56117979 is a deficient number, since it is larger than the sum of its proper divisors (24941337).

56117979 is a wasteful number, since it uses less digits than its factorization.

56117979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235337 (or 6235334 counting only the distinct ones).

The product of its digits is 119070, while the sum is 45.

The square root of 56117979 is about 7491.1934296212. The cubic root of 56117979 is about 382.8547215594.

The spelling of 56117979 in words is "fifty-six million, one hundred seventeen thousand, nine hundred seventy-nine".