56055181 has 16 divisors (see below), whose sum is σ = 69236608. Its totient is φ = 44193600.

The previous prime is 56055151. The next prime is 56055191. The reversal of 56055181 is 18155065.

It is a cyclic number.

It is not a de Polignac number, because 56055181 - 2¹¹ = 56053133 is a prime.

It is a super-2 number, since 2×56055181² = 6284366633885522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56055151) 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, 29191 + ... + 31051.

It is an arithmetic number, because the mean of its divisors is an integer number (4327288).

Almost surely, 2^56055181 is an apocalyptic number.

It is an amenable number.

56055181 is a deficient number, since it is larger than the sum of its proper divisors (13181427).

56055181 is a wasteful number, since it uses less digits than its factorization.

56055181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212.

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 56055181 is about 7487.0008013890. Note that the first 3 decimals coincide. The cubic root of 56055181 is about 382.7118589394.

The spelling of 56055181 in words is "fifty-six million, fifty-five thousand, one hundred eighty-one".