56556871033 has 4 divisors (see below), whose sum is σ = 60907399588. Its totient is φ = 52206342480.

The previous prime is 56556871003. The next prime is 56556871051. The reversal of 56556871033 is 33017865565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24382197904 + 32174673129 = 156148^2 + 179373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56556871033 is a prime.

It is a super-2 number, since 2×56556871033² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56556871003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175264258 + ... + 2175264283.

It is an arithmetic number, because the mean of its divisors is an integer number (15226849897).

Almost surely, 2^56556871033 is an apocalyptic number.

It is an amenable number.

56556871033 is a deficient number, since it is larger than the sum of its proper divisors (4350528555).

56556871033 is a wasteful number, since it uses less digits than its factorization.

56556871033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350528554.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 56556871033 in words is "fifty-six billion, five hundred fifty-six million, eight hundred seventy-one thousand, thirty-three".