171085 has 4 divisors (see below), whose sum is σ = 205308. Its totient is φ = 136864.

The previous prime is 171079. The next prime is 171091. The reversal of 171085 is 580171.

171085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580171 = 61 ⋅9511.

It is an interprime number because it is at equal distance from previous prime (171079) and next prime (171091).

It can be written as a sum of positive squares in 2 ways, for example, as 121801 + 49284 = 349^2 + 222^2 .

It is a cyclic number.

It is not a de Polignac number, because 171085 - 2³ = 171077 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17104 + ... + 17113.

It is an arithmetic number, because the mean of its divisors is an integer number (51327).

2¹⁷¹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

171085 is a deficient number, since it is larger than the sum of its proper divisors (34223).

171085 is an equidigital number, since it uses as much as digits as its factorization.

171085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34222.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 171085 is about 413.6242255961. The cubic root of 171085 is about 55.5141862391.

The spelling of 171085 in words is "one hundred seventy-one thousand, eighty-five".