517516897 has 2 divisors, whose sum is σ = 517516898. Its totient is φ = 517516896.

The previous prime is 517516843. The next prime is 517516903. The reversal of 517516897 is 798615715.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445674321 + 71842576 = 21111^2 + 8476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517516897 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 517516897.

It is not a weakly prime, because it can be changed into another prime (517516297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258758448 + 258758449.

It is an arithmetic number, because the mean of its divisors is an integer number (258758449).

Almost surely, 2^517516897 is an apocalyptic number.

It is an amenable number.

517516897 is a deficient number, since it is larger than the sum of its proper divisors (1).

517516897 is an equidigital number, since it uses as much as digits as its factorization.

517516897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 49.

The square root of 517516897 is about 22748.9977141851. The cubic root of 517516897 is about 802.8631247756.

The spelling of 517516897 in words is "five hundred seventeen million, five hundred sixteen thousand, eight hundred ninety-seven".