27427291 has 2 divisors, whose sum is σ = 27427292. Its totient is φ = 27427290.

The previous prime is 27427261. The next prime is 27427303. The reversal of 27427291 is 19272472.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27427291 - 2⁵ = 27427259 is a prime.

It is equal to p_1707982 and since 27427291 and 1707982 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (27427261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13713645 + 13713646.

It is an arithmetic number, because the mean of its divisors is an integer number (13713646).

Almost surely, 2^27427291 is an apocalyptic number.

27427291 is a deficient number, since it is larger than the sum of its proper divisors (1).

27427291 is an equidigital number, since it uses as much as digits as its factorization.

27427291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 27427291 is about 5237.1071213028. The cubic root of 27427291 is about 301.5742835794.

The spelling of 27427291 in words is "twenty-seven million, four hundred twenty-seven thousand, two hundred ninety-one".