55166111 has 24 divisors (see below), whose sum is σ = 75401424. Its totient is φ = 39674880.

The previous prime is 55166087. The next prime is 55166141. The reversal of 55166111 is 11166155.

It is not a de Polignac number, because 55166111 - 2⁶ = 55166047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3071 + ... + 10943.

It is an arithmetic number, because the mean of its divisors is an integer number (3141726).

Almost surely, 2^55166111 is an apocalyptic number.

55166111 is a deficient number, since it is larger than the sum of its proper divisors (20235313).

55166111 is a wasteful number, since it uses less digits than its factorization.

55166111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911 (or 7904 counting only the distinct ones).

The product of its digits is 900, while the sum is 26.

The square root of 55166111 is about 7427.3892452193. The cubic root of 55166111 is about 380.6777171885.

The spelling of 55166111 in words is "fifty-five million, one hundred sixty-six thousand, one hundred eleven".