56573037565 has 24 divisors (see below), whose sum is σ = 75734094240. Its totient is φ = 40529908320.

The previous prime is 56573037511. The next prime is 56573037569.

56573037565 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56573037565 - 2²⁹ = 56036166653 is a prime.

It is a super-2 number, since 2×56573037565² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56573037569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 657295 + ... + 738364.

It is an arithmetic number, because the mean of its divisors is an integer number (3155587260).

Almost surely, 2^56573037565 is an apocalyptic number.

56573037565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56573037565 is a deficient number, since it is larger than the sum of its proper divisors (19161056675).

56573037565 is a wasteful number, since it uses less digits than its factorization.

56573037565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395753 (or 1395742 counting only the distinct ones).

The product of its (nonzero) digits is 9922500, while the sum is 52.

The spelling of 56573037565 in words is "fifty-six billion, five hundred seventy-three million, thirty-seven thousand, five hundred sixty-five".