55372166 has 4 divisors (see below), whose sum is σ = 83058252. Its totient is φ = 27686082.

The previous prime is 55372123. The next prime is 55372171. The reversal of 55372166 is 66127355.

55372166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 13843040 + ... + 13843043.

It is an arithmetic number, because the mean of its divisors is an integer number (20764563).

Almost surely, 2^55372166 is an apocalyptic number.

55372166 is a deficient number, since it is larger than the sum of its proper divisors (27686086).

55372166 is a wasteful number, since it uses less digits than its factorization.

55372166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27686085.

The product of its digits is 37800, while the sum is 35.

The square root of 55372166 is about 7441.2476104481. The cubic root of 55372166 is about 381.1510940784.

The spelling of 55372166 in words is "fifty-five million, three hundred seventy-two thousand, one hundred sixty-six".