166026171 has 4 divisors (see below), whose sum is σ = 221368232. Its totient is φ = 110684112.

The previous prime is 166026109. The next prime is 166026191. The reversal of 166026171 is 171620661.

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

It is not a de Polignac number, because 166026171 - 2⁹ = 166025659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166026101) 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, 27671026 + ... + 27671031.

It is an arithmetic number, because the mean of its divisors is an integer number (55342058).

Almost surely, 2^166026171 is an apocalyptic number.

166026171 is a deficient number, since it is larger than the sum of its proper divisors (55342061).

166026171 is an equidigital number, since it uses as much as digits as its factorization.

166026171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55342060.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 166026171 is about 12885.1143184684. The cubic root of 166026171 is about 549.6153464746.

The spelling of 166026171 in words is "one hundred sixty-six million, twenty-six thousand, one hundred seventy-one".