27168109 has 2 divisors, whose sum is σ = 27168110. Its totient is φ = 27168108.

The previous prime is 27168067. The next prime is 27168133. The reversal of 27168109 is 90186172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23474025 + 3694084 = 4845^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 27168109 - 2¹⁷ = 27037037 is a prime.

It is a super-2 number, since 2×27168109² = 1476212293271762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27168509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13584054 + 13584055.

It is an arithmetic number, because the mean of its divisors is an integer number (13584055).

Almost surely, 2^27168109 is an apocalyptic number.

It is an amenable number.

27168109 is a deficient number, since it is larger than the sum of its proper divisors (1).

27168109 is an equidigital number, since it uses as much as digits as its factorization.

27168109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 27168109 is about 5212.3036174037. The cubic root of 27168109 is about 300.6213381671.

The spelling of 27168109 in words is "twenty-seven million, one hundred sixty-eight thousand, one hundred nine".