2551005239 has 2 divisors, whose sum is σ = 2551005240. Its totient is φ = 2551005238.

The previous prime is 2551005203. The next prime is 2551005241. The reversal of 2551005239 is 9325001552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2551005239 is a prime.

It is a Sophie Germain prime.

Together with 2551005241, 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 (2551005139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275502619 + 1275502620.

It is an arithmetic number, because the mean of its divisors is an integer number (1275502620).

Almost surely, 2^2551005239 is an apocalyptic number.

2551005239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551005239 is an equidigital number, since it uses as much as digits as its factorization.

2551005239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 2551005239 is about 50507.4770603324. The cubic root of 2551005239 is about 1366.3767079545.

The spelling of 2551005239 in words is "two billion, five hundred fifty-one million, five thousand, two hundred thirty-nine".