159321 has 8 divisors (see below), whose sum is σ = 221760. Its totient is φ = 101552.

The previous prime is 159319. The next prime is 159337. The reversal of 159321 is 123951.

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 159321 - 2¹ = 159319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159311) 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, 1086 + ... + 1223.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2¹⁵⁹³²¹ is an apocalyptic number.

It is an amenable number.

159321 is a deficient number, since it is larger than the sum of its proper divisors (62439).

159321 is a wasteful number, since it uses less digits than its factorization.

159321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335.

The product of its digits is 270, while the sum is 21.

The square root of 159321 is about 399.1503476135. The cubic root of 159321 is about 54.2114480432.

The spelling of 159321 in words is "one hundred fifty-nine thousand, three hundred twenty-one".