5078256509 has 2 divisors, whose sum is σ = 5078256510. Its totient is φ = 5078256508.

The previous prime is 5078256451. The next prime is 5078256511. The reversal of 5078256509 is 9056528705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4827192484 + 251064025 = 69478^2 + 15845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5078256509 is a prime.

Together with 5078256511, 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 (5078256569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539128254 + 2539128255.

It is an arithmetic number, because the mean of its divisors is an integer number (2539128255).

Almost surely, 2^5078256509 is an apocalyptic number.

It is an amenable number.

5078256509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5078256509 is an equidigital number, since it uses as much as digits as its factorization.

5078256509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 47.

The square root of 5078256509 is about 71261.8867909067. The cubic root of 5078256509 is about 1718.8509213705.

The spelling of 5078256509 in words is "five billion, seventy-eight million, two hundred fifty-six thousand, five hundred nine".