564512491 has 2 divisors, whose sum is σ = 564512492. Its totient is φ = 564512490.

The previous prime is 564512467. The next prime is 564512513. The reversal of 564512491 is 194215465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 564512491 - 2¹³ = 564504299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 564512491.

It is not a weakly prime, because it can be changed into another prime (564512411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282256245 + 282256246.

It is an arithmetic number, because the mean of its divisors is an integer number (282256246).

Almost surely, 2^564512491 is an apocalyptic number.

564512491 is a deficient number, since it is larger than the sum of its proper divisors (1).

564512491 is an equidigital number, since it uses as much as digits as its factorization.

564512491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 564512491 is about 23759.4716060774. The cubic root of 564512491 is about 826.4650995903.

The spelling of 564512491 in words is "five hundred sixty-four million, five hundred twelve thousand, four hundred ninety-one".