557711508521 has 2 divisors, whose sum is σ = 557711508522. Its totient is φ = 557711508520.

The previous prime is 557711508493. The next prime is 557711508647. The reversal of 557711508521 is 125805117755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 501031802896 + 56679705625 = 707836^2 + 238075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557711508521 is a prime.

It is a super-2 number, since 2×557711508521² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (557711502521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278855754260 + 278855754261.

It is an arithmetic number, because the mean of its divisors is an integer number (278855754261).

Almost surely, 2^557711508521 is an apocalyptic number.

It is an amenable number.

557711508521 is a deficient number, since it is larger than the sum of its proper divisors (1).

557711508521 is an equidigital number, since it uses as much as digits as its factorization.

557711508521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 490000, while the sum is 47.

The spelling of 557711508521 in words is "five hundred fifty-seven billion, seven hundred eleven million, five hundred eight thousand, five hundred twenty-one".