27027857 has 2 divisors, whose sum is σ = 27027858. Its totient is φ = 27027856.

The previous prime is 27027839. The next prime is 27027859. The reversal of 27027857 is 75872072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20079361 + 6948496 = 4481^2 + 2636^2 .

It is a cyclic number.

It is not a de Polignac number, because 27027857 - 2⁸ = 27027601 is a prime.

Together with 27027859, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27027857.

It is not a weakly prime, because it can be changed into another prime (27027859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13513928 + 13513929.

It is an arithmetic number, because the mean of its divisors is an integer number (13513929).

Almost surely, 2^27027857 is an apocalyptic number.

It is an amenable number.

27027857 is a deficient number, since it is larger than the sum of its proper divisors (1).

27027857 is an equidigital number, since it uses as much as digits as its factorization.

27027857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54880, while the sum is 38.

The square root of 27027857 is about 5198.8322727320. The cubic root of 27027857 is about 300.1031386114.

The spelling of 27027857 in words is "twenty-seven million, twenty-seven thousand, eight hundred fifty-seven".