55612666 has 16 divisors (see below), whose sum is σ = 87591744. Its totient is φ = 26430624.

The previous prime is 55612657. The next prime is 55612681. The reversal of 55612666 is 66621655.

55612666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3790 + ... + 11206.

It is an arithmetic number, because the mean of its divisors is an integer number (5474484).

Almost surely, 2^55612666 is an apocalyptic number.

55612666 is a deficient number, since it is larger than the sum of its proper divisors (31979078).

55612666 is a wasteful number, since it uses less digits than its factorization.

55612666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7605.

The product of its digits is 64800, while the sum is 37.

The square root of 55612666 is about 7457.3900260078. The cubic root of 55612666 is about 381.7021196851.

The spelling of 55612666 in words is "fifty-five million, six hundred twelve thousand, six hundred sixty-six".