158020171 has 2 divisors, whose sum is σ = 158020172. Its totient is φ = 158020170.

The previous prime is 158020147. The next prime is 158020183. The reversal of 158020171 is 171020851.

158020171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158020171 - 2¹⁷ = 157889099 is a prime.

It is not a weakly prime, because it can be changed into another prime (158020271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79010085 + 79010086.

It is an arithmetic number, because the mean of its divisors is an integer number (79010086).

Almost surely, 2^158020171 is an apocalyptic number.

158020171 is a deficient number, since it is larger than the sum of its proper divisors (1).

158020171 is an equidigital number, since it uses as much as digits as its factorization.

158020171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 158020171 is about 12570.6074236689. The cubic root of 158020171 is about 540.6350222607.

The spelling of 158020171 in words is "one hundred fifty-eight million, twenty thousand, one hundred seventy-one".