158591291 has 2 divisors, whose sum is σ = 158591292. Its totient is φ = 158591290.

The previous prime is 158591281. The next prime is 158591299. The reversal of 158591291 is 192195851.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158591291 is a prime.

It is not a weakly prime, because it can be changed into another prime (158591299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79295645 + 79295646.

It is an arithmetic number, because the mean of its divisors is an integer number (79295646).

Almost surely, 2^158591291 is an apocalyptic number.

158591291 is a deficient number, since it is larger than the sum of its proper divisors (1).

158591291 is an equidigital number, since it uses as much as digits as its factorization.

158591291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 41.

The square root of 158591291 is about 12593.3034188810. The cubic root of 158591291 is about 541.2855641764.

The spelling of 158591291 in words is "one hundred fifty-eight million, five hundred ninety-one thousand, two hundred ninety-one".