55566366 has 16 divisors (see below), whose sum is σ = 113230224. Its totient is φ = 18172544.

The previous prime is 55566311. The next prime is 55566373. The reversal of 55566366 is 66366555.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 87051 + ... + 87686.

It is an arithmetic number, because the mean of its divisors is an integer number (7076889).

Almost surely, 2^55566366 is an apocalyptic number.

55566366 is an abundant number, since it is smaller than the sum of its proper divisors (57663858).

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

55566366 is a wasteful number, since it uses less digits than its factorization.

55566366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174795.

The product of its digits is 486000, while the sum is 42.

The square root of 55566366 is about 7454.2850763839. The cubic root of 55566366 is about 381.5961623187.

The spelling of 55566366 in words is "fifty-five million, five hundred sixty-six thousand, three hundred sixty-six".