56325809 has 2 divisors, whose sum is σ = 56325810. Its totient is φ = 56325808.

The previous prime is 56325799. The next prime is 56325833. The reversal of 56325809 is 90852365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56325025 + 784 = 7505^2 + 28^2 .

It is a cyclic number.

It is not a de Polignac number, because 56325809 - 2⁸ = 56325553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56325889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28162904 + 28162905.

It is an arithmetic number, because the mean of its divisors is an integer number (28162905).

Almost surely, 2^56325809 is an apocalyptic number.

It is an amenable number.

56325809 is a deficient number, since it is larger than the sum of its proper divisors (1).

56325809 is an equidigital number, since it uses as much as digits as its factorization.

56325809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 56325809 is about 7505.0522316637. The cubic root of 56325809 is about 383.3267667852.

The spelling of 56325809 in words is "fifty-six million, three hundred twenty-five thousand, eight hundred nine".