171345 has 8 divisors (see below), whose sum is σ = 274176. Its totient is φ = 91376.

The previous prime is 171341. The next prime is 171383. The reversal of 171345 is 543171.

171345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 171345 - 2² = 171341 is a prime.

It is a Curzon number.

171345 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (171341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5697 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (34272).

2¹⁷¹³⁴⁵ is an apocalyptic number.

171345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

171345 is a deficient number, since it is larger than the sum of its proper divisors (102831).

171345 is a wasteful number, since it uses less digits than its factorization.

171345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11431.

The product of its digits is 420, while the sum is 21.

The square root of 171345 is about 413.9384012145. The cubic root of 171345 is about 55.5422938716.

The spelling of 171345 in words is "one hundred seventy-one thousand, three hundred forty-five".