159517 has 4 divisors (see below), whose sum is σ = 160380. Its totient is φ = 158656.

The previous prime is 159503. The next prime is 159521. The reversal of 159517 is 715951.

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, and also an emirpimes, since its reverse is a distinct semiprime: 715951 = 47 ⋅15233.

It can be written as a sum of positive squares in 2 ways, for example, as 47961 + 111556 = 219^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 159517 - 2⁷ = 159389 is a prime.

It is a Duffinian number.

159517 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (40095).

2¹⁵⁹⁵¹⁷ is an apocalyptic number.

It is an amenable number.

159517 is a deficient number, since it is larger than the sum of its proper divisors (863).

159517 is an equidigital number, since it uses as much as digits as its factorization.

159517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its digits is 1575, while the sum is 28.

The square root of 159517 is about 399.3957936684. The cubic root of 159517 is about 54.2336696159.

It can be divided in two parts, 159 and 517, that added together give a palindrome (676).

The spelling of 159517 in words is "one hundred fifty-nine thousand, five hundred seventeen".