27540281 has 2 divisors, whose sum is σ = 27540282. Its totient is φ = 27540280.

The previous prime is 27540263. The next prime is 27540301. The reversal of 27540281 is 18204572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17774656 + 9765625 = 4216^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 27540281 - 2⁶ = 27540217 is a prime.

It is a super-2 number, since 2×27540281² = 1516934155117922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_1714592 and since 27540281 and 1714592 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 (27540211) 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, 13770140 + 13770141.

It is an arithmetic number, because the mean of its divisors is an integer number (13770141).

Almost surely, 2^27540281 is an apocalyptic number.

It is an amenable number.

27540281 is a deficient number, since it is larger than the sum of its proper divisors (1).

27540281 is an equidigital number, since it uses as much as digits as its factorization.

27540281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 27540281 is about 5247.8834781272. The cubic root of 27540281 is about 301.9878399560.

The spelling of 27540281 in words is "twenty-seven million, five hundred forty thousand, two hundred eighty-one".