159523 has 8 divisors (see below), whose sum is σ = 196448. Its totient is φ = 126144.

The previous prime is 159521. The next prime is 159539. The reversal of 159523 is 325951.

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 159523 - 2¹ = 159521 is a prime.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (159521) 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, 786 + ... + 967.

It is an arithmetic number, because the mean of its divisors is an integer number (24556).

2¹⁵⁹⁵²³ is an apocalyptic number.

159523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

159523 is a deficient number, since it is larger than the sum of its proper divisors (36925).

159523 is a wasteful number, since it uses less digits than its factorization.

159523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773.

The product of its digits is 1350, while the sum is 25.

The square root of 159523 is about 399.4033049438. The cubic root of 159523 is about 54.2343495809.

It can be divided in two parts, 15 and 9523, that multiplied together give a triangular number (142845 = T₅₃₄).

The spelling of 159523 in words is "one hundred fifty-nine thousand, five hundred twenty-three".