159917 has 4 divisors (see below), whose sum is σ = 163680. Its totient is φ = 156156.

The previous prime is 159911. The next prime is 159931. The reversal of 159917 is 719951.

159917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 159917 - 2⁶ = 159853 is a prime.

It is a Duffinian number.

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 159917.

It is not an unprimeable number, because it can be changed into a prime (159911) 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, 1817 + ... + 1902.

It is an arithmetic number, because the mean of its divisors is an integer number (40920).

2¹⁵⁹⁹¹⁷ is an apocalyptic number.

It is an amenable number.

159917 is a deficient number, since it is larger than the sum of its proper divisors (3763).

159917 is an equidigital number, since it uses as much as digits as its factorization.

159917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762.

The product of its digits is 2835, while the sum is 32.

The square root of 159917 is about 399.8962365414. The cubic root of 159917 is about 54.2789633473.

The spelling of 159917 in words is "one hundred fifty-nine thousand, nine hundred seventeen".