27545249 has 2 divisors, whose sum is σ = 27545250. Its totient is φ = 27545248.

The previous prime is 27545197. The next prime is 27545251. The reversal of 27545249 is 94254572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16443025 + 11102224 = 4055^2 + 3332^2 .

It is a cyclic number.

It is not a de Polignac number, because 27545249 - 2¹⁶ = 27479713 is a prime.

Together with 27545251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27545449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13772624 + 13772625.

It is an arithmetic number, because the mean of its divisors is an integer number (13772625).

Almost surely, 2^27545249 is an apocalyptic number.

It is an amenable number.

27545249 is a deficient number, since it is larger than the sum of its proper divisors (1).

27545249 is an equidigital number, since it uses as much as digits as its factorization.

27545249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

The square root of 27545249 is about 5248.3567904631. The cubic root of 27545249 is about 302.0059974249.

The spelling of 27545249 in words is "twenty-seven million, five hundred forty-five thousand, two hundred forty-nine".