56776457 has 2 divisors, whose sum is σ = 56776458. Its totient is φ = 56776456.

The previous prime is 56776441. The next prime is 56776501. The reversal of 56776457 is 75467765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54523456 + 2253001 = 7384^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 56776457 - 2⁴ = 56776441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56776417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28388228 + 28388229.

It is an arithmetic number, because the mean of its divisors is an integer number (28388229).

Almost surely, 2^56776457 is an apocalyptic number.

It is an amenable number.

56776457 is a deficient number, since it is larger than the sum of its proper divisors (1).

56776457 is an equidigital number, since it uses as much as digits as its factorization.

56776457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1234800, while the sum is 47.

The square root of 56776457 is about 7535.0153948084. The cubic root of 56776457 is about 384.3463513757.

The spelling of 56776457 in words is "fifty-six million, seven hundred seventy-six thousand, four hundred fifty-seven".