27275681 has 2 divisors, whose sum is σ = 27275682. Its totient is φ = 27275680.

The previous prime is 27275671. The next prime is 27275693. The reversal of 27275681 is 18657272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 4389025 = 4784^2 + 2095^2 .

It is a cyclic number.

It is not a de Polignac number, because 27275681 - 2¹⁰ = 27274657 is a prime.

It is a super-2 number, since 2×27275681² = 1487925548027522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27275671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13637840 + 13637841.

It is an arithmetic number, because the mean of its divisors is an integer number (13637841).

Almost surely, 2^27275681 is an apocalyptic number.

It is an amenable number.

27275681 is a deficient number, since it is larger than the sum of its proper divisors (1).

27275681 is an equidigital number, since it uses as much as digits as its factorization.

27275681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 38.

The square root of 27275681 is about 5222.6124688703. The cubic root of 27275681 is about 301.0175852391.

The spelling of 27275681 in words is "twenty-seven million, two hundred seventy-five thousand, six hundred eighty-one".