56520589 has 2 divisors, whose sum is σ = 56520590. Its totient is φ = 56520588.

The previous prime is 56520557. The next prime is 56520599. The reversal of 56520589 is 98502565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32832900 + 23687689 = 5730^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 56520589 - 2⁵ = 56520557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56520539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28260294 + 28260295.

It is an arithmetic number, because the mean of its divisors is an integer number (28260295).

Almost surely, 2^56520589 is an apocalyptic number.

It is an amenable number.

56520589 is a deficient number, since it is larger than the sum of its proper divisors (1).

56520589 is an equidigital number, since it uses as much as digits as its factorization.

56520589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 56520589 is about 7518.0176243475. The cubic root of 56520589 is about 383.7681185587.

The spelling of 56520589 in words is "fifty-six million, five hundred twenty thousand, five hundred eighty-nine".