56259618 has 16 divisors (see below), whose sum is σ = 112634496. Its totient is φ = 18734000.

The previous prime is 56259617. The next prime is 56259661. The reversal of 56259618 is 81695265.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56259618.

It is not an unprimeable number, because it can be changed into a prime (56259617) 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, 2368 + ... + 10868.

It is an arithmetic number, because the mean of its divisors is an integer number (7039656).

Almost surely, 2^56259618 is an apocalyptic number.

56259618 is an abundant number, since it is smaller than the sum of its proper divisors (56374878).

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

56259618 is a wasteful number, since it uses less digits than its factorization.

56259618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609.

The product of its digits is 129600, while the sum is 42.

The square root of 56259618 is about 7500.6411725932. The cubic root of 56259618 is about 383.1765530681.

The spelling of 56259618 in words is "fifty-six million, two hundred fifty-nine thousand, six hundred eighteen".