56547018 has 64 divisors (see below), whose sum is σ = 143078400. Its totient is φ = 16386480.

The previous prime is 56547017. The next prime is 56547019. The reversal of 56547018 is 81074565.

It is an interprime number because it is at equal distance from previous prime (56547017) and next prime (56547019).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56547011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11593 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (2235600).

Almost surely, 2^56547018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56547018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71539200).

56547018 is an abundant number, since it is smaller than the sum of its proper divisors (86531382).

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

56547018 is a wasteful number, since it uses less digits than its factorization.

56547018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184 (or 4178 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 56547018 is about 7519.7751296166. The cubic root of 56547018 is about 383.8279258331.

The spelling of 56547018 in words is "fifty-six million, five hundred forty-seven thousand, eighteen".