159173 has 4 divisors (see below), whose sum is σ = 181920. Its totient is φ = 136428.

The previous prime is 159169. The next prime is 159179. The reversal of 159173 is 371951.

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 cyclic number.

It is not a de Polignac number, because 159173 - 2² = 159169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 159173.

It is not an unprimeable number, because it can be changed into a prime (159179) 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, 11363 + ... + 11376.

It is an arithmetic number, because the mean of its divisors is an integer number (45480).

2¹⁵⁹¹⁷³ is an apocalyptic number.

It is an amenable number.

159173 is a deficient number, since it is larger than the sum of its proper divisors (22747).

159173 is an equidigital number, since it uses as much as digits as its factorization.

159173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22746.

The product of its digits is 945, while the sum is 26.

The square root of 159173 is about 398.9649107378. The cubic root of 159173 is about 54.1946564087.

The spelling of 159173 in words is "one hundred fifty-nine thousand, one hundred seventy-three".