55473618 has 16 divisors (see below), whose sum is σ = 117473760. Its totient is φ = 17403456.

The previous prime is 55473589. The next prime is 55473623. The reversal of 55473618 is 81637455.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271828 + ... + 272031.

It is an arithmetic number, because the mean of its divisors is an integer number (7342110).

Almost surely, 2^55473618 is an apocalyptic number.

55473618 is an abundant number, since it is smaller than the sum of its proper divisors (62000142).

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

55473618 is a wasteful number, since it uses less digits than its factorization.

55473618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543881.

The product of its digits is 100800, while the sum is 39.

The square root of 55473618 is about 7448.0613585013. The cubic root of 55473618 is about 381.3837317110.

The spelling of 55473618 in words is "fifty-five million, four hundred seventy-three thousand, six hundred eighteen".