56985779 has 2 divisors, whose sum is σ = 56985780. Its totient is φ = 56985778.

The previous prime is 56985757. The next prime is 56985791. The reversal of 56985779 is 97758965.

56985779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56985779 - 2²⁴ = 40208563 is a prime.

It is not a weakly prime, because it can be changed into another prime (56985079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28492889 + 28492890.

It is an arithmetic number, because the mean of its divisors is an integer number (28492890).

Almost surely, 2^56985779 is an apocalyptic number.

56985779 is a deficient number, since it is larger than the sum of its proper divisors (1).

56985779 is an equidigital number, since it uses as much as digits as its factorization.

56985779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 56.

The square root of 56985779 is about 7548.8925677877. The cubic root of 56985779 is about 384.8181048898.

The spelling of 56985779 in words is "fifty-six million, nine hundred eighty-five thousand, seven hundred seventy-nine".