158251 has 4 divisors (see below), whose sum is σ = 166600. Its totient is φ = 149904.

The previous prime is 158243. The next prime is 158261. The reversal of 158251 is 152851.

158251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158251 - 2³ = 158243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158201) 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, 4146 + ... + 4183.

It is an arithmetic number, because the mean of its divisors is an integer number (41650).

2¹⁵⁸²⁵¹ is an apocalyptic number.

158251 is a deficient number, since it is larger than the sum of its proper divisors (8349).

158251 is an equidigital number, since it uses as much as digits as its factorization.

158251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8348.

The product of its digits is 400, while the sum is 22.

The square root of 158251 is about 397.8077425089. The cubic root of 158251 is about 54.0898139569.

The spelling of 158251 in words is "one hundred fifty-eight thousand, two hundred fifty-one".