168085171 has 4 divisors (see below), whose sum is σ = 177972552. Its totient is φ = 158197792.

The previous prime is 168085147. The next prime is 168085223. The reversal of 168085171 is 171580861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171580861 = 61 ⋅2812801.

It is a cyclic number.

It is not a de Polignac number, because 168085171 - 2⁵ = 168085139 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 168085171.

It is not an unprimeable number, because it can be changed into a prime (168085271) 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, 4943665 + ... + 4943698.

It is an arithmetic number, because the mean of its divisors is an integer number (44493138).

Almost surely, 2^168085171 is an apocalyptic number.

168085171 is a deficient number, since it is larger than the sum of its proper divisors (9887381).

168085171 is an equidigital number, since it uses as much as digits as its factorization.

168085171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9887380.

The product of its (nonzero) digits is 13440, while the sum is 37.

The square root of 168085171 is about 12964.7665231581. The cubic root of 168085171 is about 551.8780656861.

The spelling of 168085171 in words is "one hundred sixty-eight million, eighty-five thousand, one hundred seventy-one".