56552181 has 16 divisors (see below), whose sum is σ = 88180224. Its totient is φ = 31563504.

The previous prime is 56552159. The next prime is 56552191. The reversal of 56552181 is 18125565.

It is not a de Polignac number, because 56552181 - 2¹⁵ = 56519413 is a prime.

It is a super-2 number, since 2×56552181² = 6396298351713522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56552191) 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, 30411 + ... + 32216.

It is an arithmetic number, because the mean of its divisors is an integer number (5511264).

Almost surely, 2^56552181 is an apocalyptic number.

It is an amenable number.

56552181 is a deficient number, since it is larger than the sum of its proper divisors (31628043).

56552181 is a wasteful number, since it uses less digits than its factorization.

56552181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62680.

The product of its digits is 12000, while the sum is 33.

The square root of 56552181 is about 7520.1184166208. The cubic root of 56552181 is about 383.8396072228.

The spelling of 56552181 in words is "fifty-six million, five hundred fifty-two thousand, one hundred eighty-one".