158401 has 8 divisors (see below), whose sum is σ = 169344. Its totient is φ = 147840.

The previous prime is 158393. The next prime is 158407. The reversal of 158401 is 104851.

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 158401 - 2³ = 158393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158407) 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, 1585 + ... + 1681.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2¹⁵⁸⁴⁰¹ is an apocalyptic number.

It is an amenable number.

158401 is a deficient number, since it is larger than the sum of its proper divisors (10943).

158401 is an equidigital number, since it uses as much as digits as its factorization.

158401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 158401 is about 397.9962311379. The cubic root of 158401 is about 54.1068984407.

The spelling of 158401 in words is "one hundred fifty-eight thousand, four hundred one".