171155 has 4 divisors (see below), whose sum is σ = 205392. Its totient is φ = 136920.

The previous prime is 171131. The next prime is 171161. The reversal of 171155 is 551171.

171155 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: 551171 = 19 ⋅29009.

It is not a de Polignac number, because 171155 - 2⁶ = 171091 is a prime.

It is a Duffinian 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, 17111 + ... + 17120.

It is an arithmetic number, because the mean of its divisors is an integer number (51348).

2¹⁷¹¹⁵⁵ is an apocalyptic number.

171155 is a deficient number, since it is larger than the sum of its proper divisors (34237).

171155 is an equidigital number, since it uses as much as digits as its factorization.

171155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34236.

The product of its digits is 175, while the sum is 20.

The square root of 171155 is about 413.7088348102. The cubic root of 171155 is about 55.5217564784.

The spelling of 171155 in words is "one hundred seventy-one thousand, one hundred fifty-five".