27078091 has 2 divisors, whose sum is σ = 27078092. Its totient is φ = 27078090.

The previous prime is 27078067. The next prime is 27078113. The reversal of 27078091 is 19087072.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27078091 is a prime.

It is not a weakly prime, because it can be changed into another prime (27078011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13539045 + 13539046.

It is an arithmetic number, because the mean of its divisors is an integer number (13539046).

Almost surely, 2^27078091 is an apocalyptic number.

27078091 is a deficient number, since it is larger than the sum of its proper divisors (1).

27078091 is an equidigital number, since it uses as much as digits as its factorization.

27078091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 27078091 is about 5203.6613071952. The cubic root of 27078091 is about 300.2889475343.

The spelling of 27078091 in words is "twenty-seven million, seventy-eight thousand, ninety-one".