56662571522 has 18 divisors (see below), whose sum is σ = 85440040329. Its totient is φ = 28183333360.

The previous prime is 56662571513. The next prime is 56662571549. The reversal of 56662571522 is 22517526665.

It can be written as a sum of positive squares in 2 ways, for example, as 54853855681 + 1808715841 = 234209^2 + 42529^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=168319.

It is a super-2 number, since 2×56662571522² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 94594979 + ... + 94595577.

Almost surely, 2^56662571522 is an apocalyptic number.

56662571522 is a deficient number, since it is larger than the sum of its proper divisors (28777468807).

56662571522 is an frugal number, since it uses more digits than its factorization.

56662571522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 882 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 47.

The spelling of 56662571522 in words is "fifty-six billion, six hundred sixty-two million, five hundred seventy-one thousand, five hundred twenty-two".