159281 has 4 divisors (see below), whose sum is σ = 160500. Its totient is φ = 158064.

The previous prime is 159233. The next prime is 159287. The reversal of 159281 is 182951.

It is a happy number.

159281 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 an emirpimes, since its reverse is a distinct semiprime: 182951 = 19 ⋅9629.

It can be written as a sum of positive squares in 2 ways, for example, as 43681 + 115600 = 209^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 159281 - 2¹⁴ = 142897 is a prime.

It is a super-2 number, since 2×159281² = 50740873922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 159281.

It is not an unprimeable number, because it can be changed into a prime (159287) 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, 386 + ... + 683.

It is an arithmetic number, because the mean of its divisors is an integer number (40125).

2¹⁵⁹²⁸¹ is an apocalyptic number.

It is an amenable number.

159281 is a deficient number, since it is larger than the sum of its proper divisors (1219).

159281 is a wasteful number, since it uses less digits than its factorization.

159281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218.

The product of its digits is 720, while the sum is 26.

The square root of 159281 is about 399.1002380355. The cubic root of 159281 is about 54.2069107894.

The spelling of 159281 in words is "one hundred fifty-nine thousand, two hundred eighty-one".