55245618 has 16 divisors (see below), whose sum is σ = 122768160. Its totient is φ = 18415188.

The previous prime is 55245613. The next prime is 55245629. The reversal of 55245618 is 81654255.

55245618 is a `hidden beast` number, since 552 + 45 + 61 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (55245613) 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, 511480 + ... + 511587.

It is an arithmetic number, because the mean of its divisors is an integer number (7673010).

Almost surely, 2^55245618 is an apocalyptic number.

55245618 is an abundant number, since it is smaller than the sum of its proper divisors (67522542).

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

55245618 is a wasteful number, since it uses less digits than its factorization.

55245618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023078 (or 1023072 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 55245618 is about 7432.7396025961. The cubic root of 55245618 is about 380.8605106584.

The spelling of 55245618 in words is "fifty-five million, two hundred forty-five thousand, six hundred eighteen".