166441271 has 8 divisors (see below), whose sum is σ = 183894624. Its totient is φ = 149839360.

The previous prime is 166441259. The next prime is 166441283. The reversal of 166441271 is 172144661.

It is an interprime number because it is at equal distance from previous prime (166441259) and next prime (166441283).

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

It is not a de Polignac number, because 166441271 - 2²⁶ = 99332407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166446271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212450 + ... + 213231.

It is an arithmetic number, because the mean of its divisors is an integer number (22986828).

Almost surely, 2^166441271 is an apocalyptic number.

166441271 is a deficient number, since it is larger than the sum of its proper divisors (17453353).

166441271 is a wasteful number, since it uses less digits than its factorization.

166441271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425721.

The product of its digits is 8064, while the sum is 32.

The square root of 166441271 is about 12901.2119973280. The cubic root of 166441271 is about 550.0730162015.

The spelling of 166441271 in words is "one hundred sixty-six million, four hundred forty-one thousand, two hundred seventy-one".