56105520051 has 32 divisors (see below), whose sum is σ = 90000829440. Its totient is φ = 30394957824.

The previous prime is 56105520049. The next prime is 56105520089. The reversal of 56105520051 is 15002550165.

It is not a de Polignac number, because 56105520051 - 2¹ = 56105520049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56105520011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459406 + ... + 568563.

It is an arithmetic number, because the mean of its divisors is an integer number (2812525920).

Almost surely, 2^56105520051 is an apocalyptic number.

56105520051 is a deficient number, since it is larger than the sum of its proper divisors (33895309389).

56105520051 is a wasteful number, since it uses less digits than its factorization.

56105520051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028115.

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 56105520051 in words is "fifty-six billion, one hundred five million, five hundred twenty thousand, fifty-one".