166045256 has 64 divisors (see below), whose sum is σ = 373766400. Its totient is φ = 68318208.

The previous prime is 166045249. The next prime is 166045267. The reversal of 166045256 is 652540661.

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 15 ways as a sum of consecutive naturals, for example, 31121 + ... + 36063.

It is an arithmetic number, because the mean of its divisors is an integer number (5840100).

Almost surely, 2^166045256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166045256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186883200).

166045256 is an abundant number, since it is smaller than the sum of its proper divisors (207721144).

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

166045256 is a wasteful number, since it uses less digits than its factorization.

166045256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998 (or 4994 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 166045256 is about 12885.8548804493. The cubic root of 166045256 is about 549.6364054175.

The spelling of 166045256 in words is "one hundred sixty-six million, forty-five thousand, two hundred fifty-six".