27827081 has 2 divisors, whose sum is σ = 27827082. Its totient is φ = 27827080.

The previous prime is 27827027. The next prime is 27827087. The reversal of 27827081 is 18072872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26988025 + 839056 = 5195^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 27827081 - 2⁶ = 27827017 is a prime.

It is a super-2 number, since 2×27827081² = 1548692873961122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27827087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13913540 + 13913541.

It is an arithmetic number, because the mean of its divisors is an integer number (13913541).

Almost surely, 2^27827081 is an apocalyptic number.

It is an amenable number.

27827081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27827081 is an equidigital number, since it uses as much as digits as its factorization.

27827081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 27827081 is about 5275.1380076734. The cubic root of 27827081 is about 303.0325060342.

The spelling of 27827081 in words is "twenty-seven million, eight hundred twenty-seven thousand, eighty-one".