27275081 has 2 divisors, whose sum is σ = 27275082. Its totient is φ = 27275080.

The previous prime is 27275069. The next prime is 27275093. The reversal of 27275081 is 18057272.

It is a balanced prime because it is at equal distance from previous prime (27275069) and next prime (27275093).

It can be written as a sum of positive squares in only one way, i.e., 25847056 + 1428025 = 5084^2 + 1195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27275081 is a prime.

It is a super-2 number, since 2×27275081² = 1487860087113122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_1699106 and since 27275081 and 1699106 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 (27275041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13637540 + 13637541.

It is an arithmetic number, because the mean of its divisors is an integer number (13637541).

Almost surely, 2^27275081 is an apocalyptic number.

It is an amenable number.

27275081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27275081 is an equidigital number, since it uses as much as digits as its factorization.

27275081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 27275081 is about 5222.5550260385. Note that the first 3 decimals coincide. The cubic root of 27275081 is about 301.0153779997.

The spelling of 27275081 in words is "twenty-seven million, two hundred seventy-five thousand, eighty-one".