2559634549 has 2 divisors, whose sum is σ = 2559634550. Its totient is φ = 2559634548.

The previous prime is 2559634541. The next prime is 2559634589. The reversal of 2559634549 is 9454369552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1609453924 + 950180625 = 40118^2 + 30825^2 .

It is a cyclic number.

It is not a de Polignac number, because 2559634549 - 2³ = 2559634541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2559634496 and 2559634505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2559634541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279817274 + 1279817275.

It is an arithmetic number, because the mean of its divisors is an integer number (1279817275).

Almost surely, 2^2559634549 is an apocalyptic number.

It is an amenable number.

2559634549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2559634549 is an equidigital number, since it uses as much as digits as its factorization.

2559634549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832000, while the sum is 52.

The square root of 2559634549 is about 50592.8310040069. The cubic root of 2559634549 is about 1367.9156591999.

The spelling of 2559634549 in words is "two billion, five hundred fifty-nine million, six hundred thirty-four thousand, five hundred forty-nine".