27509149 has 2 divisors, whose sum is σ = 27509150. Its totient is φ = 27509148.

The previous prime is 27509129. The next prime is 27509159. The reversal of 27509149 is 94190572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 573049 = 5190^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 27509149 - 2⁵ = 27509117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27509129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13754574 + 13754575.

It is an arithmetic number, because the mean of its divisors is an integer number (13754575).

Almost surely, 2^27509149 is an apocalyptic number.

It is an amenable number.

27509149 is a deficient number, since it is larger than the sum of its proper divisors (1).

27509149 is an equidigital number, since it uses as much as digits as its factorization.

27509149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 27509149 is about 5244.9164912322. The cubic root of 27509149 is about 301.8740063294.

The spelling of 27509149 in words is "twenty-seven million, five hundred nine thousand, one hundred forty-nine".