158581271 has 4 divisors (see below), whose sum is σ = 158796600. Its totient is φ = 158365944.

The previous prime is 158581259. The next prime is 158581279. The reversal of 158581271 is 172185851.

158581271 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: 172185851 = 167 ⋅1031053.

It is a cyclic number.

It is not a de Polignac number, because 158581271 - 2⁶ = 158581207 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 (158581279) 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, 106556 + ... + 108033.

It is an arithmetic number, because the mean of its divisors is an integer number (39699150).

Almost surely, 2^158581271 is an apocalyptic number.

158581271 is a deficient number, since it is larger than the sum of its proper divisors (215329).

158581271 is an equidigital number, since it uses as much as digits as its factorization.

158581271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215328.

The product of its digits is 22400, while the sum is 38.

The square root of 158581271 is about 12592.9055821125. The cubic root of 158581271 is about 541.2741642322.

The spelling of 158581271 in words is "one hundred fifty-eight million, five hundred eighty-one thousand, two hundred seventy-one".