56018612 has 72 divisors (see below), whose sum is σ = 116776800. Its totient is φ = 23302080.

The previous prime is 56018579. The next prime is 56018617. The reversal of 56018612 is 21681065.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56018617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 949439 + ... + 949497.

It is an arithmetic number, because the mean of its divisors is an integer number (1621900).

Almost surely, 2^56018612 is an apocalyptic number.

56018612 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

56018612 is an abundant number, since it is smaller than the sum of its proper divisors (60758188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56018612 is a wasteful number, since it uses less digits than its factorization.

56018612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 56018612 is about 7484.5582367966. The cubic root of 56018612 is about 382.6286169492.

Adding to 56018612 its reverse (21681065), we get a palindrome (77699677).

The spelling of 56018612 in words is "fifty-six million, eighteen thousand, six hundred twelve".