158871 has 4 divisors (see below), whose sum is σ = 211832. Its totient is φ = 105912.

The previous prime is 158867. The next prime is 158881. The reversal of 158871 is 178851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178851 = 3 ⋅59617.

It is not a de Polignac number, because 158871 - 2² = 158867 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158881) 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, 26476 + ... + 26481.

It is an arithmetic number, because the mean of its divisors is an integer number (52958).

2¹⁵⁸⁸⁷¹ is an apocalyptic number.

158871 is a deficient number, since it is larger than the sum of its proper divisors (52961).

158871 is an equidigital number, since it uses as much as digits as its factorization.

158871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52960.

The product of its digits is 2240, while the sum is 30.

The square root of 158871 is about 398.5862516445. The cubic root of 158871 is about 54.1603600810.

The spelling of 158871 in words is "one hundred fifty-eight thousand, eight hundred seventy-one".