158001 has 4 divisors (see below), whose sum is σ = 210672. Its totient is φ = 105332.

The previous prime is 157999. The next prime is 158003. The reversal of 158001 is 100851.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 100851 = 3 ⋅33617.

It is an interprime number because it is at equal distance from previous prime (157999) and next prime (158003).

It is a cyclic number.

It is not a de Polignac number, because 158001 - 2¹ = 157999 is a prime.

It is a D-number.

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (158003) 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, 26331 + ... + 26336.

It is an arithmetic number, because the mean of its divisors is an integer number (52668).

2¹⁵⁸⁰⁰¹ is an apocalyptic number.

It is an amenable number.

158001 is a deficient number, since it is larger than the sum of its proper divisors (52671).

158001 is an equidigital number, since it uses as much as digits as its factorization.

158001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52670.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 158001 is about 397.4933961716. The cubic root of 158001 is about 54.0613158104.

Adding to 158001 its reverse (100851), we get a palindrome (258852).

The spelling of 158001 in words is "one hundred fifty-eight thousand, one".