27055309 has 2 divisors, whose sum is σ = 27055310. Its totient is φ = 27055308.

The previous prime is 27055307. The next prime is 27055349. The reversal of 27055309 is 90355072.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15132100 + 11923209 = 3890^2 + 3453^2 .

It is a cyclic number.

It is not a de Polignac number, because 27055309 - 2¹ = 27055307 is a prime.

Together with 27055307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27055307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13527654 + 13527655.

It is an arithmetic number, because the mean of its divisors is an integer number (13527655).

Almost surely, 2^27055309 is an apocalyptic number.

It is an amenable number.

27055309 is a deficient number, since it is larger than the sum of its proper divisors (1).

27055309 is an equidigital number, since it uses as much as digits as its factorization.

27055309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 27055309 is about 5201.4718109397. The cubic root of 27055309 is about 300.2047084312.

The spelling of 27055309 in words is "twenty-seven million, fifty-five thousand, three hundred nine".