27751049 has 2 divisors, whose sum is σ = 27751050. Its totient is φ = 27751048.

The previous prime is 27751037. The next prime is 27751051. The reversal of 27751049 is 94015772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22391824 + 5359225 = 4732^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 27751049 - 2⁴ = 27751033 is a prime.

Together with 27751051, 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 (27751019) 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, 13875524 + 13875525.

It is an arithmetic number, because the mean of its divisors is an integer number (13875525).

Almost surely, 2^27751049 is an apocalyptic number.

It is an amenable number.

27751049 is a deficient number, since it is larger than the sum of its proper divisors (1).

27751049 is an equidigital number, since it uses as much as digits as its factorization.

27751049 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 27751049 is about 5267.9264421592. The cubic root of 27751049 is about 302.7562621402.

The spelling of 27751049 in words is "twenty-seven million, seven hundred fifty-one thousand, forty-nine".