27475109 has 2 divisors, whose sum is σ = 27475110. Its totient is φ = 27475108.

The previous prime is 27475081. The next prime is 27475141. The reversal of 27475109 is 90157472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22591009 + 4884100 = 4753^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 27475109 - 2¹⁶ = 27409573 is a prime.

It is a super-2 number, since 2×27475109² = 1509763229123762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27475169) 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, 13737554 + 13737555.

It is an arithmetic number, because the mean of its divisors is an integer number (13737555).

Almost surely, 2^27475109 is an apocalyptic number.

It is an amenable number.

27475109 is a deficient number, since it is larger than the sum of its proper divisors (1).

27475109 is an equidigital number, since it uses as much as digits as its factorization.

27475109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 27475109 is about 5241.6704398503. The cubic root of 27475109 is about 301.7494413160.

The spelling of 27475109 in words is "twenty-seven million, four hundred seventy-five thousand, one hundred nine".