159901 has 8 divisors (see below), whose sum is σ = 186624. Its totient is φ = 134160.

The previous prime is 159899. The next prime is 159911. The reversal of 159901 is 109951.

159901 = 40² + 41² + ... + 81².

159901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 159901 - 2¹ = 159899 is a prime.

It is a Duffinian number.

159901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159911) 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, 156 + ... + 586.

It is an arithmetic number, because the mean of its divisors is an integer number (23328).

2¹⁵⁹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

159901 is a deficient number, since it is larger than the sum of its proper divisors (26723).

159901 is an equidigital number, since it uses as much as digits as its factorization.

159901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

The product of its (nonzero) digits is 405, while the sum is 25.

The square root of 159901 is about 399.8762308515. The cubic root of 159901 is about 54.2771530491.

The spelling of 159901 in words is "one hundred fifty-nine thousand, nine hundred one".