564557959 has 6 divisors (see below), whose sum is σ = 656730744. Its totient is φ = 483906780.

The previous prime is 564557923. The next prime is 564557999. The reversal of 564557959 is 959755465.

It is not a de Polignac number, because 564557959 - 2⁹ = 564557447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564557999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5760747 + ... + 5760844.

It is an arithmetic number, because the mean of its divisors is an integer number (109455124).

Almost surely, 2^564557959 is an apocalyptic number.

564557959 is a deficient number, since it is larger than the sum of its proper divisors (92172785).

564557959 is a wasteful number, since it uses less digits than its factorization.

564557959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11521605 (or 11521598 counting only the distinct ones).

The product of its digits is 8505000, while the sum is 55.

The square root of 564557959 is about 23760.4284262721. The cubic root of 564557959 is about 826.4872878837.

It can be divided in two parts, 564557 and 959, that added together give a triangular number (565516 = T₁₀₆₃).

The spelling of 564557959 in words is "five hundred sixty-four million, five hundred fifty-seven thousand, nine hundred fifty-nine".