55766166 has 8 divisors (see below), whose sum is σ = 111532344. Its totient is φ = 18588720.

The previous prime is 55766149. The next prime is 55766167. The reversal of 55766166 is 66166755.

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

55766166 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55766167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4647175 + ... + 4647186.

It is an arithmetic number, because the mean of its divisors is an integer number (13941543).

Almost surely, 2^55766166 is an apocalyptic number.

55766166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55766166 is a wasteful number, since it uses less digits than its factorization.

55766166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9294366.

The product of its digits is 226800, while the sum is 42.

The square root of 55766166 is about 7467.6747384979. The cubic root of 55766166 is about 382.0529837055.

The spelling of 55766166 in words is "fifty-five million, seven hundred sixty-six thousand, one hundred sixty-six".