170171 has 4 divisors (see below), whose sum is σ = 171000. Its totient is φ = 169344.

The previous prime is 170167. The next prime is 170179. The reversal of 170171 is 171071.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 170171 - 2² = 170167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170179) 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, 155 + ... + 603.

It is an arithmetic number, because the mean of its divisors is an integer number (42750).

2¹⁷⁰¹⁷¹ is an apocalyptic number.

170171 is the 221-st centered heptagonal number.

170171 is a deficient number, since it is larger than the sum of its proper divisors (829).

170171 is an equidigital number, since it uses as much as digits as its factorization.

170171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 49, while the sum is 17.

The square root of 170171 is about 412.5178784004. The cubic root of 170171 is about 55.4151504915.

Subtracting 170171 from its reverse (171071), we obtain a square (900 = 30²).

The spelling of 170171 in words is "one hundred seventy thousand, one hundred seventy-one", and thus it is an iban number.