27540239 has 2 divisors, whose sum is σ = 27540240. Its totient is φ = 27540238.

The previous prime is 27540217. The next prime is 27540257. The reversal of 27540239 is 93204572.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27540239 is a 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 (27540259) 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, 13770119 + 13770120.

It is an arithmetic number, because the mean of its divisors is an integer number (13770120).

Almost surely, 2^27540239 is an apocalyptic number.

27540239 is a deficient number, since it is larger than the sum of its proper divisors (1).

27540239 is an equidigital number, since it uses as much as digits as its factorization.

27540239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 27540239 is about 5247.8794765124. The cubic root of 27540239 is about 301.9876864415.

The spelling of 27540239 in words is "twenty-seven million, five hundred forty thousand, two hundred thirty-nine".