27189311 has 2 divisors, whose sum is σ = 27189312. Its totient is φ = 27189310.

The previous prime is 27189299. The next prime is 27189313. The reversal of 27189311 is 11398172.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27189311 is a prime.

Together with 27189313, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1694156 and since 27189311 and 1694156 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27189313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13594655 + 13594656.

It is an arithmetic number, because the mean of its divisors is an integer number (13594656).

Almost surely, 2^27189311 is an apocalyptic number.

27189311 is a deficient number, since it is larger than the sum of its proper divisors (1).

27189311 is an equidigital number, since it uses as much as digits as its factorization.

27189311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The square root of 27189311 is about 5214.3370623695. The cubic root of 27189311 is about 300.6995194924.

The spelling of 27189311 in words is "twenty-seven million, one hundred eighty-nine thousand, three hundred eleven".