27091271 has 2 divisors, whose sum is σ = 27091272. Its totient is φ = 27091270.

The previous prime is 27091261. The next prime is 27091279. The reversal of 27091271 is 17219072.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27091271 - 2¹⁰ = 27090247 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27091279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13545635 + 13545636.

It is an arithmetic number, because the mean of its divisors is an integer number (13545636).

Almost surely, 2^27091271 is an apocalyptic number.

27091271 is a deficient number, since it is larger than the sum of its proper divisors (1).

27091271 is an equidigital number, since it uses as much as digits as its factorization.

27091271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 27091271 is about 5204.9275691406. The cubic root of 27091271 is about 300.3376605493.

The spelling of 27091271 in words is "twenty-seven million, ninety-one thousand, two hundred seventy-one".