166001171 has 12 divisors (see below), whose sum is σ = 193730688. Its totient is φ = 141824592.

The previous prime is 166001149. The next prime is 166001177. The reversal of 166001171 is 171100661.

It is not a de Polignac number, because 166001171 - 2²⁶ = 98892307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166001177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10190 + ... + 20876.

It is an arithmetic number, because the mean of its divisors is an integer number (16144224).

Almost surely, 2^166001171 is an apocalyptic number.

166001171 is a deficient number, since it is larger than the sum of its proper divisors (27729517).

166001171 is a wasteful number, since it uses less digits than its factorization.

166001171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11018 (or 11011 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 166001171 is about 12884.1441702583. The cubic root of 166001171 is about 549.5877583072.

It can be divided in two parts, 16600 and 1171, that added together give a palindrome (17771).

The spelling of 166001171 in words is "one hundred sixty-six million, one thousand, one hundred seventy-one".