2556444349 has 2 divisors, whose sum is σ = 2556444350. Its totient is φ = 2556444348.

The previous prime is 2556444311. The next prime is 2556444353. The reversal of 2556444349 is 9434446552.

2556444349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2516527225 + 39917124 = 50165^2 + 6318^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556444349 - 2⁹ = 2556443837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2556444299 and 2556444308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2556444049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278222174 + 1278222175.

It is an arithmetic number, because the mean of its divisors is an integer number (1278222175).

Almost surely, 2^2556444349 is an apocalyptic number.

It is an amenable number.

2556444349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556444349 is an equidigital number, since it uses as much as digits as its factorization.

2556444349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 46.

The square root of 2556444349 is about 50561.2929917739. The cubic root of 2556444349 is about 1367.3471224679.

The spelling of 2556444349 in words is "two billion, five hundred fifty-six million, four hundred forty-four thousand, three hundred forty-nine".