27212281 has 2 divisors, whose sum is σ = 27212282. Its totient is φ = 27212280.

The previous prime is 27212239. The next prime is 27212323. The reversal of 27212281 is 18221272.

It is a balanced prime because it is at equal distance from previous prime (27212239) and next prime (27212323).

It can be written as a sum of positive squares in only one way, i.e., 27206656 + 5625 = 5216^2 + 75^2 .

It is a cyclic number.

It is not a de Polignac number, because 27212281 - 2¹¹ = 27210233 is a prime.

It is a super-2 number, since 2×27212281² = 1481016474445922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27212221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13606140 + 13606141.

It is an arithmetic number, because the mean of its divisors is an integer number (13606141).

Almost surely, 2^27212281 is an apocalyptic number.

It is an amenable number.

27212281 is a deficient number, since it is larger than the sum of its proper divisors (1).

27212281 is an equidigital number, since it uses as much as digits as its factorization.

27212281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 25.

The square root of 27212281 is about 5216.5391784209. The cubic root of 27212281 is about 300.7841743751.

The spelling of 27212281 in words is "twenty-seven million, two hundred twelve thousand, two hundred eighty-one".