56555145 has 16 divisors (see below), whose sum is σ = 100542720. Its totient is φ = 30162672.

The previous prime is 56555143. The next prime is 56555159. The reversal of 56555145 is 54155565.

56555145 is a `hidden beast` number, since 5 + 65 + 551 + 45 = 666.

It is not a de Polignac number, because 56555145 - 2¹ = 56555143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56555143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209329 + ... + 209598.

It is an arithmetic number, because the mean of its divisors is an integer number (6283920).

Almost surely, 2^56555145 is an apocalyptic number.

It is an amenable number.

56555145 is a deficient number, since it is larger than the sum of its proper divisors (43987575).

56555145 is a wasteful number, since it uses less digits than its factorization.

56555145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418941 (or 418935 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 56555145 is about 7520.3154854035. The cubic root of 56555145 is about 383.8463130103.

The spelling of 56555145 in words is "fifty-six million, five hundred fifty-five thousand, one hundred forty-five".