56512979 has 2 divisors, whose sum is σ = 56512980. Its totient is φ = 56512978.

The previous prime is 56512943. The next prime is 56512997. The reversal of 56512979 is 97921565.

It is a happy number.

Together with next prime (56512997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56512979 - 2⁸ = 56512723 is a prime.

It is not a weakly prime, because it can be changed into another prime (56512919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28256489 + 28256490.

It is an arithmetic number, because the mean of its divisors is an integer number (28256490).

Almost surely, 2^56512979 is an apocalyptic number.

56512979 is a deficient number, since it is larger than the sum of its proper divisors (1).

56512979 is an equidigital number, since it uses as much as digits as its factorization.

56512979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 44.

The square root of 56512979 is about 7517.5114898482. The cubic root of 56512979 is about 383.7508941188.

The spelling of 56512979 in words is "fifty-six million, five hundred twelve thousand, nine hundred seventy-nine".