56604409 has 2 divisors, whose sum is σ = 56604410. Its totient is φ = 56604408.

The previous prime is 56604397. The next prime is 56604421. The reversal of 56604409 is 90440665.

It is a balanced prime because it is at equal distance from previous prime (56604397) and next prime (56604421).

It can be written as a sum of positive squares in only one way, i.e., 32319225 + 24285184 = 5685^2 + 4928^2 .

It is a cyclic number.

It is not a de Polignac number, because 56604409 - 2¹⁹ = 56080121 is a prime.

It is not a weakly prime, because it can be changed into another prime (56604479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28302204 + 28302205.

It is an arithmetic number, because the mean of its divisors is an integer number (28302205).

Almost surely, 2^56604409 is an apocalyptic number.

It is an amenable number.

56604409 is a deficient number, since it is larger than the sum of its proper divisors (1).

56604409 is an equidigital number, since it uses as much as digits as its factorization.

56604409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 56604409 is about 7523.5901669349. The cubic root of 56604409 is about 383.9577341538.

The spelling of 56604409 in words is "fifty-six million, six hundred four thousand, four hundred nine".