158801 has 4 divisors (see below), whose sum is σ = 159600. Its totient is φ = 158004.

The previous prime is 158791. The next prime is 158803. The reversal of 158801 is 108851.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158803) 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, 170 + ... + 588.

It is an arithmetic number, because the mean of its divisors is an integer number (39900).

2¹⁵⁸⁸⁰¹ is an apocalyptic number.

It is an amenable number.

158801 is a deficient number, since it is larger than the sum of its proper divisors (799).

158801 is an equidigital number, since it uses as much as digits as its factorization.

158801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 158801 is about 398.4984316155. The cubic root of 158801 is about 54.1524043976.

It can be divided in two parts, 158 and 801, that added together give a palindrome (959).

The spelling of 158801 in words is "one hundred fifty-eight thousand, eight hundred one".