158101 has 4 divisors (see below), whose sum is σ = 162412. Its totient is φ = 153792.

The previous prime is 158077. The next prime is 158113. The reversal of 158101 is 101851.

158101 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, and also an emirpimes, since its reverse is a distinct semiprime: 101851 = 179 ⋅569.

It can be written as a sum of positive squares in 2 ways, for example, as 96100 + 62001 = 310^2 + 249^2 .

It is a cyclic number.

It is not a de Polignac number, because 158101 - 2¹³ = 149909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158141) 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, 2100 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (40603).

2¹⁵⁸¹⁰¹ is an apocalyptic number.

It is an amenable number.

158101 is a deficient number, since it is larger than the sum of its proper divisors (4311).

158101 is an equidigital number, since it uses as much as digits as its factorization.

158101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 158101 is about 397.6191645281. The cubic root of 158101 is about 54.0727186738.

Adding to 158101 its reverse (101851), we get a palindrome (259952).

The spelling of 158101 in words is "one hundred fifty-eight thousand, one hundred one".