158727091 has 4 divisors (see below), whose sum is σ = 158775552. Its totient is φ = 158678632.

The previous prime is 158727089. The next prime is 158727109. The reversal of 158727091 is 190727851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190727851 = 5641 ⋅33811.

It is a cyclic number.

It is not a de Polignac number, because 158727091 - 2¹ = 158727089 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158727391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18931 + ... + 25996.

It is an arithmetic number, because the mean of its divisors is an integer number (39693888).

Almost surely, 2^158727091 is an apocalyptic number.

158727091 is a deficient number, since it is larger than the sum of its proper divisors (48461).

158727091 is an equidigital number, since it uses as much as digits as its factorization.

158727091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48460.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 158727091 is about 12598.6940196197. The cubic root of 158727091 is about 541.4400190819.

The spelling of 158727091 in words is "one hundred fifty-eight million, seven hundred twenty-seven thousand, ninety-one".