2551945339 has 2 divisors, whose sum is σ = 2551945340. Its totient is φ = 2551945338.

The previous prime is 2551945337. The next prime is 2551945351. The reversal of 2551945339 is 9335491552.

2551945339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2551945339 - 2¹ = 2551945337 is a prime.

Together with 2551945337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2551945337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275972669 + 1275972670.

It is an arithmetic number, because the mean of its divisors is an integer number (1275972670).

Almost surely, 2^2551945339 is an apocalyptic number.

2551945339 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551945339 is an equidigital number, since it uses as much as digits as its factorization.

2551945339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 729000, while the sum is 46.

The square root of 2551945339 is about 50516.7827459350. The cubic root of 2551945339 is about 1366.5445336889.

The spelling of 2551945339 in words is "two billion, five hundred fifty-one million, nine hundred forty-five thousand, three hundred thirty-nine".