27331009 has 2 divisors, whose sum is σ = 27331010. Its totient is φ = 27331008.

The previous prime is 27330977. The next prime is 27331033. The reversal of 27331009 is 90013372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14799409 + 12531600 = 3847^2 + 3540^2 .

It is a cyclic number.

It is not a de Polignac number, because 27331009 - 2⁵ = 27330977 is a prime.

It is not a weakly prime, because it can be changed into another prime (27331069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13665504 + 13665505.

It is an arithmetic number, because the mean of its divisors is an integer number (13665505).

Almost surely, 2^27331009 is an apocalyptic number.

It is an amenable number.

27331009 is a deficient number, since it is larger than the sum of its proper divisors (1).

27331009 is an equidigital number, since it uses as much as digits as its factorization.

27331009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 27331009 is about 5227.9067512724. The cubic root of 27331009 is about 301.2209831845.

The spelling of 27331009 in words is "twenty-seven million, three hundred thirty-one thousand, nine".