56920769 has 2 divisors, whose sum is σ = 56920770. Its totient is φ = 56920768.

The previous prime is 56920753. The next prime is 56920783. The reversal of 56920769 is 96702965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56851600 + 69169 = 7540^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 56920769 - 2⁴ = 56920753 is a prime.

It is a super-2 number, since 2×56920769² = 6479947887102722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56920739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28460384 + 28460385.

It is an arithmetic number, because the mean of its divisors is an integer number (28460385).

Almost surely, 2^56920769 is an apocalyptic number.

It is an amenable number.

56920769 is a deficient number, since it is larger than the sum of its proper divisors (1).

56920769 is an equidigital number, since it uses as much as digits as its factorization.

56920769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 56920769 is about 7544.5854094178. The cubic root of 56920769 is about 384.6717143066.

The spelling of 56920769 in words is "fifty-six million, nine hundred twenty thousand, seven hundred sixty-nine".