56566231252513 has 2 divisors, whose sum is σ = 56566231252514. Its totient is φ = 56566231252512.

The previous prime is 56566231252463. The next prime is 56566231252543. The reversal of 56566231252513 is 31525213266565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54058844510784 + 2507386741729 = 7352472^2 + 1583473^2 .

It is a cyclic number.

It is not a de Polignac number, because 56566231252513 - 2¹⁷ = 56566231121441 is a prime.

It is a super-2 number, since 2×56566231252513² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56566231252543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28283115626256 + 28283115626257.

It is an arithmetic number, because the mean of its divisors is an integer number (28283115626257).

Almost surely, 2^{56566231252513} is an apocalyptic number.

It is an amenable number.

56566231252513 is a deficient number, since it is larger than the sum of its proper divisors (1).

56566231252513 is an equidigital number, since it uses as much as digits as its factorization.

56566231252513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720000, while the sum is 52.

The spelling of 56566231252513 in words is "fifty-six trillion, five hundred sixty-six billion, two hundred thirty-one million, two hundred fifty-two thousand, five hundred thirteen".