159261 has 4 divisors (see below), whose sum is σ = 212352. Its totient is φ = 106172.

The previous prime is 159233. The next prime is 159287. The reversal of 159261 is 162951.

159261 = 129² + 130² + ... + 137².

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 159261 - 2⁹ = 158749 is a prime.

It is a super-2 number, since 2×159261² = 50728132242, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159161) 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, 26541 + ... + 26546.

It is an arithmetic number, because the mean of its divisors is an integer number (53088).

2¹⁵⁹²⁶¹ is an apocalyptic number.

It is an amenable number.

159261 is a deficient number, since it is larger than the sum of its proper divisors (53091).

159261 is an equidigital number, since it uses as much as digits as its factorization.

159261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53090.

The product of its digits is 540, while the sum is 24.

The square root of 159261 is about 399.0751808870. The cubic root of 159261 is about 54.2046418776.

It can be divided in two parts, 1592 and 61, that added together give a triangular number (1653 = T₅₇).

The spelling of 159261 in words is "one hundred fifty-nine thousand, two hundred sixty-one".