27227281 has 2 divisors, whose sum is σ = 27227282. Its totient is φ = 27227280.

The previous prime is 27227279. The next prime is 27227303. The reversal of 27227281 is 18272272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24840256 + 2387025 = 4984^2 + 1545^2 .

It is a cyclic number.

It is not a de Polignac number, because 27227281 - 2¹ = 27227279 is a prime.

It is a super-2 number, since 2×27227281² = 1482649661305922, which contains 22 as substring.

Together with 27227279, 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 (27227231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13613640 + 13613641.

It is an arithmetic number, because the mean of its divisors is an integer number (13613641).

Almost surely, 2^27227281 is an apocalyptic number.

It is an amenable number.

27227281 is a deficient number, since it is larger than the sum of its proper divisors (1).

27227281 is an equidigital number, since it uses as much as digits as its factorization.

27227281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 31.

The square root of 27227281 is about 5217.9767151646. The cubic root of 27227281 is about 300.8394304790.

The spelling of 27227281 in words is "twenty-seven million, two hundred twenty-seven thousand, two hundred eighty-one".