27755393 has 2 divisors, whose sum is σ = 27755394. Its totient is φ = 27755392.

The previous prime is 27755389. The next prime is 27755419. The reversal of 27755393 is 39355772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16418704 + 11336689 = 4052^2 + 3367^2 .

It is a cyclic number.

It is not a de Polignac number, because 27755393 - 2² = 27755389 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27755393.

It is not a weakly prime, because it can be changed into another prime (27755383) 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, 13877696 + 13877697.

It is an arithmetic number, because the mean of its divisors is an integer number (13877697).

Almost surely, 2^27755393 is an apocalyptic number.

It is an amenable number.

27755393 is a deficient number, since it is larger than the sum of its proper divisors (1).

27755393 is an equidigital number, since it uses as much as digits as its factorization.

27755393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 198450, while the sum is 41.

The square root of 27755393 is about 5268.3387324659. The cubic root of 27755393 is about 302.7720585951.

The spelling of 27755393 in words is "twenty-seven million, seven hundred fifty-five thousand, three hundred ninety-three".