158091171 has 8 divisors (see below), whose sum is σ = 240900864. Its totient is φ = 90337800.

The previous prime is 158091169. The next prime is 158091187. The reversal of 158091171 is 171190851.

158091171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158091171 - 2¹ = 158091169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158091161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3764055 + ... + 3764096.

It is an arithmetic number, because the mean of its divisors is an integer number (30112608).

Almost surely, 2^158091171 is an apocalyptic number.

158091171 is a deficient number, since it is larger than the sum of its proper divisors (82809693).

158091171 is an equidigital number, since it uses as much as digits as its factorization.

158091171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7528161.

The product of its (nonzero) digits is 2520, while the sum is 33.

The square root of 158091171 is about 12573.4311546212. The cubic root of 158091171 is about 540.7159809949.

The spelling of 158091171 in words is "one hundred fifty-eight million, ninety-one thousand, one hundred seventy-one".