171089 has 4 divisors (see below), whose sum is σ = 176640. Its totient is φ = 165540.

The previous prime is 171079. The next prime is 171091. The reversal of 171089 is 980171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-171089 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (171029) 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, 2729 + ... + 2790.

It is an arithmetic number, because the mean of its divisors is an integer number (44160).

2¹⁷¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

171089 is a deficient number, since it is larger than the sum of its proper divisors (5551).

171089 is an equidigital number, since it uses as much as digits as its factorization.

171089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 171089 is about 413.6290608746. The cubic root of 171089 is about 55.5146188798.

The spelling of 171089 in words is "one hundred seventy-one thousand, eighty-nine".