56066181 has 16 divisors (see below), whose sum is σ = 75816000. Its totient is φ = 36850688.

The previous prime is 56066177. The next prime is 56066183. The reversal of 56066181 is 18166065.

It is a cyclic number.

It is not a de Polignac number, because 56066181 - 2² = 56066177 is a prime.

It is a super-2 number, since 2×56066181² = 6286833303849522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56066183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124645 + ... + 125093.

It is an arithmetic number, because the mean of its divisors is an integer number (4738500).

Almost surely, 2^56066181 is an apocalyptic number.

It is an amenable number.

56066181 is a deficient number, since it is larger than the sum of its proper divisors (19749819).

56066181 is a wasteful number, since it uses less digits than its factorization.

56066181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 56066181 is about 7487.7353719265. The cubic root of 56066181 is about 382.7368911489.

The spelling of 56066181 in words is "fifty-six million, sixty-six thousand, one hundred eighty-one".