56558634529 has 2 divisors, whose sum is σ = 56558634530. Its totient is φ = 56558634528.

The previous prime is 56558634527. The next prime is 56558634553. The reversal of 56558634529 is 92543685565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28620180625 + 27938453904 = 169175^2 + 167148^2 .

It is a cyclic number.

It is not a de Polignac number, because 56558634529 - 2¹ = 56558634527 is a prime.

Together with 56558634527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56558634523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28279317264 + 28279317265.

It is an arithmetic number, because the mean of its divisors is an integer number (28279317265).

Almost surely, 2^56558634529 is an apocalyptic number.

It is an amenable number.

56558634529 is a deficient number, since it is larger than the sum of its proper divisors (1).

56558634529 is an equidigital number, since it uses as much as digits as its factorization.

56558634529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880000, while the sum is 58.

The spelling of 56558634529 in words is "fifty-six billion, five hundred fifty-eight million, six hundred thirty-four thousand, five hundred twenty-nine".