56543618 has 16 divisors (see below), whose sum is σ = 86676480. Its totient is φ = 27658176.

The previous prime is 56543593. The next prime is 56543621. The reversal of 56543618 is 81634565.

56543618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16271 + ... + 19437.

It is an arithmetic number, because the mean of its divisors is an integer number (5417280).

Almost surely, 2^56543618 is an apocalyptic number.

56543618 is a deficient number, since it is larger than the sum of its proper divisors (30132862).

56543618 is a wasteful number, since it uses less digits than its factorization.

56543618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361.

The product of its digits is 86400, while the sum is 38.

The square root of 56543618 is about 7519.5490556283. The cubic root of 56543618 is about 383.8202328774.

The spelling of 56543618 in words is "fifty-six million, five hundred forty-three thousand, six hundred eighteen".