56557475565 has 8 divisors (see below), whose sum is σ = 90491960928. Its totient is φ = 30163986960.

The previous prime is 56557475551. The next prime is 56557475581.

56557475565 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56557475565 - 2⁴ = 56557475549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56557475499 and 56557475508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1885249171 + ... + 1885249200.

It is an arithmetic number, because the mean of its divisors is an integer number (11311495116).

Almost surely, 2^56557475565 is an apocalyptic number.

It is an amenable number.

56557475565 is a deficient number, since it is larger than the sum of its proper divisors (33934485363).

56557475565 is a wasteful number, since it uses less digits than its factorization.

56557475565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770498379.

The product of its digits is 110250000, while the sum is 60.

The spelling of 56557475565 in words is "fifty-six billion, five hundred fifty-seven million, four hundred seventy-five thousand, five hundred sixty-five".