171324161 has 4 divisors (see below), whose sum is σ = 171385812. Its totient is φ = 171262512.

The previous prime is 171324157. The next prime is 171324163. The reversal of 171324161 is 161423171.

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

It can be written as a sum of positive squares in 2 ways, for example, as 170433025 + 891136 = 13055^2 + 944^2 .

It is a cyclic number.

It is not a de Polignac number, because 171324161 - 2² = 171324157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 171324161.

It is not an unprimeable number, because it can be changed into a prime (171324163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26450 + ... + 32283.

It is an arithmetic number, because the mean of its divisors is an integer number (42846453).

Almost surely, 2^171324161 is an apocalyptic number.

It is an amenable number.

171324161 is a deficient number, since it is larger than the sum of its proper divisors (61651).

171324161 is an equidigital number, since it uses as much as digits as its factorization.

171324161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61650.

The product of its digits is 1008, while the sum is 26.

The square root of 171324161 is about 13089.0855677545. The cubic root of 171324161 is about 555.4004209343.

The spelling of 171324161 in words is "one hundred seventy-one million, three hundred twenty-four thousand, one hundred sixty-one".