27539 has 2 divisors, whose sum is σ = 27540. Its totient is φ = 27538.

The previous prime is 27529. The next prime is 27541. The reversal of 27539 is 93572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27539 - 2⁸ = 27283 is a prime.

It is a Sophie Germain prime.

Together with 27541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13769 + 13770.

It is an arithmetic number, because the mean of its divisors is an integer number (13770).

2²⁷⁵³⁹ is an apocalyptic number.

27539 is a deficient number, since it is larger than the sum of its proper divisors (1).

27539 is an equidigital number, since it uses as much as digits as its factorization.

27539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 26.

The square root of 27539 is about 165.9487872809. The cubic root of 27539 is about 30.1983157694.

The spelling of 27539 in words is "twenty-seven thousand, five hundred thirty-nine".