158881 has 2 divisors, whose sum is σ = 158882. Its totient is φ = 158880.

The previous prime is 158867. The next prime is 158909. The reversal of 158881 is 188851.

It is a happy number.

158881 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112225 + 46656 = 335^2 + 216^2 .

It is a cyclic number.

It is not a de Polignac number, because 158881 - 2⁵ = 158849 is a prime.

It is a super-2 number, since 2×158881² = 50486344322, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (158581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79440 + 79441.

It is an arithmetic number, because the mean of its divisors is an integer number (79441).

2¹⁵⁸⁸⁸¹ is an apocalyptic number.

It is an amenable number.

158881 is a deficient number, since it is larger than the sum of its proper divisors (1).

158881 is an equidigital number, since it uses as much as digits as its factorization.

158881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 31.

The square root of 158881 is about 398.5987957834. The cubic root of 158881 is about 54.1614964164.

The spelling of 158881 in words is "one hundred fifty-eight thousand, eight hundred eighty-one".