56212979 has 2 divisors, whose sum is σ = 56212980. Its totient is φ = 56212978.

The previous prime is 56212969. The next prime is 56213021. The reversal of 56212979 is 97921265.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56212979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56212909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28106489 + 28106490.

It is an arithmetic number, because the mean of its divisors is an integer number (28106490).

Almost surely, 2^56212979 is an apocalyptic number.

56212979 is a deficient number, since it is larger than the sum of its proper divisors (1).

56212979 is an equidigital number, since it uses as much as digits as its factorization.

56212979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 56212979 is about 7497.5315271094. The cubic root of 56212979 is about 383.0706398484.

The spelling of 56212979 in words is "fifty-six million, two hundred twelve thousand, nine hundred seventy-nine".