566516497 has 2 divisors, whose sum is σ = 566516498. Its totient is φ = 566516496.

The previous prime is 566516477. The next prime is 566516501. The reversal of 566516497 is 794615665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510805201 + 55711296 = 22601^2 + 7464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-566516497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 566516497.

It is not a weakly prime, because it can be changed into another prime (566516437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283258248 + 283258249.

It is an arithmetic number, because the mean of its divisors is an integer number (283258249).

Almost surely, 2^566516497 is an apocalyptic number.

It is an amenable number.

566516497 is a deficient number, since it is larger than the sum of its proper divisors (1).

566516497 is an equidigital number, since it uses as much as digits as its factorization.

566516497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 49.

The square root of 566516497 is about 23801.6070255771. The cubic root of 566516497 is about 827.4419217916.

The spelling of 566516497 in words is "five hundred sixty-six million, five hundred sixteen thousand, four hundred ninety-seven".