56576521 has 2 divisors, whose sum is σ = 56576522. Its totient is φ = 56576520.

The previous prime is 56576503. The next prime is 56576551. The reversal of 56576521 is 12567565.

56576521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45427600 + 11148921 = 6740^2 + 3339^2 .

It is a cyclic number.

It is not a de Polignac number, because 56576521 - 2⁵ = 56576489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56576551) 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, 28288260 + 28288261.

It is an arithmetic number, because the mean of its divisors is an integer number (28288261).

Almost surely, 2^56576521 is an apocalyptic number.

It is an amenable number.

56576521 is a deficient number, since it is larger than the sum of its proper divisors (1).

56576521 is an equidigital number, since it uses as much as digits as its factorization.

56576521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 37.

The square root of 56576521 is about 7521.7365681071. The cubic root of 56576521 is about 383.8946673805.

The spelling of 56576521 in words is "fifty-six million, five hundred seventy-six thousand, five hundred twenty-one".