557065517 has 2 divisors, whose sum is σ = 557065518. Its totient is φ = 557065516.

The previous prime is 557065513. The next prime is 557065519. The reversal of 557065517 is 715560755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 545969956 + 11095561 = 23366^2 + 3331^2 .

It is a cyclic number.

It is not a de Polignac number, because 557065517 - 2² = 557065513 is a prime.

Together with 557065519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557065511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278532758 + 278532759.

It is an arithmetic number, because the mean of its divisors is an integer number (278532759).

Almost surely, 2^557065517 is an apocalyptic number.

It is an amenable number.

557065517 is a deficient number, since it is larger than the sum of its proper divisors (1).

557065517 is an equidigital number, since it uses as much as digits as its factorization.

557065517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183750, while the sum is 41.

The square root of 557065517 is about 23602.2354237898. The cubic root of 557065517 is about 822.8147947389.

The spelling of 557065517 in words is "five hundred fifty-seven million, sixty-five thousand, five hundred seventeen".