56285181 has 24 divisors (see below), whose sum is σ = 88867584. Its totient is φ = 34174080.

The previous prime is 56285167. The next prime is 56285191. The reversal of 56285181 is 18158265.

56285181 is a `hidden beast` number, since 562 + 85 + 18 + 1 = 666.

It is not a de Polignac number, because 56285181 - 2¹¹ = 56283133 is a prime.

It is a super-2 number, since 2×56285181² = 6336043200405522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56285101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1191 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (3702816).

Almost surely, 2^56285181 is an apocalyptic number.

56285181 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

56285181 is a deficient number, since it is larger than the sum of its proper divisors (32582403).

56285181 is a wasteful number, since it uses less digits than its factorization.

56285181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11921 (or 11918 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 56285181 is about 7502.3450333879. The cubic root of 56285181 is about 383.2345796444.

The spelling of 56285181 in words is "fifty-six million, two hundred eighty-five thousand, one hundred eighty-one".