156727091 has 2 divisors, whose sum is σ = 156727092. Its totient is φ = 156727090.

The previous prime is 156727031. The next prime is 156727121. The reversal of 156727091 is 190727651.

It is a strong prime.

It is an emirp because it is prime and its reverse (190727651) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156727091 is a prime.

It is not a weakly prime, because it can be changed into another prime (156727031) 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, 78363545 + 78363546.

It is an arithmetic number, because the mean of its divisors is an integer number (78363546).

Almost surely, 2^156727091 is an apocalyptic number.

156727091 is a deficient number, since it is larger than the sum of its proper divisors (1).

156727091 is an equidigital number, since it uses as much as digits as its factorization.

156727091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 156727091 is about 12519.0690947850. The cubic root of 156727091 is about 539.1563082522.

The spelling of 156727091 in words is "one hundred fifty-six million, seven hundred twenty-seven thousand, ninety-one".