564505973 has 2 divisors, whose sum is σ = 564505974. Its totient is φ = 564505972.

The previous prime is 564505943. The next prime is 564506011. The reversal of 564505973 is 379505465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545783044 + 18722929 = 23362^2 + 4327^2 .

It is a cyclic number.

It is not a de Polignac number, because 564505973 - 2⁸ = 564505717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564505913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282252986 + 282252987.

It is an arithmetic number, because the mean of its divisors is an integer number (282252987).

Almost surely, 2^564505973 is an apocalyptic number.

It is an amenable number.

564505973 is a deficient number, since it is larger than the sum of its proper divisors (1).

564505973 is an equidigital number, since it uses as much as digits as its factorization.

564505973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 44.

The square root of 564505973 is about 23759.3344393314. The cubic root of 564505973 is about 826.4619187217.

The spelling of 564505973 in words is "five hundred sixty-four million, five hundred five thousand, nine hundred seventy-three".