56532018 has 16 divisors (see below), whose sum is σ = 113955840. Its totient is φ = 18695376.

The previous prime is 56532017. The next prime is 56532029. The reversal of 56532018 is 81023565.

It is not an unprimeable number, because it can be changed into a prime (56532013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36333 + ... + 37856.

It is an arithmetic number, because the mean of its divisors is an integer number (7122240).

Almost surely, 2^56532018 is an apocalyptic number.

56532018 is an abundant number, since it is smaller than the sum of its proper divisors (57423822).

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

56532018 is a wasteful number, since it uses less digits than its factorization.

56532018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74321.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 56532018 is about 7518.7776932158. Note that the first 3 decimals coincide. The cubic root of 56532018 is about 383.7939840017.

The spelling of 56532018 in words is "fifty-six million, five hundred thirty-two thousand, eighteen".