171005 has 8 divisors (see below), whose sum is σ = 214272. Its totient is φ = 130768.

The previous prime is 170971. The next prime is 171007. The reversal of 171005 is 500171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 171005 - 2⁸ = 170749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629 + ... + 858.

It is an arithmetic number, because the mean of its divisors is an integer number (26784).

2¹⁷¹⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

171005 is a deficient number, since it is larger than the sum of its proper divisors (43267).

171005 is a wasteful number, since it uses less digits than its factorization.

171005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515.

The product of its (nonzero) digits is 35, while the sum is 14.

The square root of 171005 is about 413.5275081539. The cubic root of 171005 is about 55.5055320082.

Adding to 171005 its reverse (500171), we get a palindrome (671176).

The spelling of 171005 in words is "one hundred seventy-one thousand, five".