56018564 has 36 divisors (see below), whose sum is σ = 114528960. Its totient is φ = 23904720.

The previous prime is 56018561. The next prime is 56018569. The reversal of 56018564 is 46581065.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56018561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60497 + ... + 61415.

It is an arithmetic number, because the mean of its divisors is an integer number (3181360).

Almost surely, 2^56018564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56018564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57264480).

56018564 is an abundant number, since it is smaller than the sum of its proper divisors (58510396).

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

56018564 is a wasteful number, since it uses less digits than its factorization.

56018564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 56018564 is about 7484.5550301938. Note that the first 3 decimals coincide. The cubic root of 56018564 is about 382.6285076630.

The spelling of 56018564 in words is "fifty-six million, eighteen thousand, five hundred sixty-four".