55166885 has 8 divisors (see below), whose sum is σ = 67038720. Its totient is φ = 43574544.

The previous prime is 55166869. The next prime is 55166911. The reversal of 55166885 is 58866155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55166885 - 2⁴ = 55166869 is a prime.

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, 69437 + ... + 70226.

It is an arithmetic number, because the mean of its divisors is an integer number (8379840).

Almost surely, 2^55166885 is an apocalyptic number.

It is an amenable number.

55166885 is a deficient number, since it is larger than the sum of its proper divisors (11871835).

55166885 is a wasteful number, since it uses less digits than its factorization.

55166885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139747.

The product of its digits is 288000, while the sum is 44.

The square root of 55166885 is about 7427.4413494823. The cubic root of 55166885 is about 380.6794975277.

The spelling of 55166885 in words is "fifty-five million, one hundred sixty-six thousand, eight hundred eighty-five".