8278559 has 2 divisors, whose sum is σ = 8278560. Its totient is φ = 8278558.

The previous prime is 8278553. The next prime is 8278561. The reversal of 8278559 is 9558728.

8278559 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8278559 - 2¹² = 8274463 is a prime.

It is a Sophie Germain prime.

Together with 8278561, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8278553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4139279 + 4139280.

It is an arithmetic number, because the mean of its divisors is an integer number (4139280).

Almost surely, 2^8278559 is an apocalyptic number.

8278559 is a deficient number, since it is larger than the sum of its proper divisors (1).

8278559 is an equidigital number, since it uses as much as digits as its factorization.

8278559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 44.

The square root of 8278559 is about 2877.2485120337. The cubic root of 8278559 is about 202.2948916441.

The spelling of 8278559 in words is "eight million, two hundred seventy-eight thousand, five hundred fifty-nine".