2561097241 has 2 divisors, whose sum is σ = 2561097242. Its totient is φ = 2561097240.

The previous prime is 2561097233. The next prime is 2561097283. The reversal of 2561097241 is 1427901652.

2561097241 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 can be written as a sum of positive squares in only one way, i.e., 2552270400 + 8826841 = 50520^2 + 2971^2 .

It is a cyclic number.

It is not a de Polignac number, because 2561097241 - 2³ = 2561097233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2561097241.

It is not a weakly prime, because it can be changed into another prime (2561097211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280548620 + 1280548621.

It is an arithmetic number, because the mean of its divisors is an integer number (1280548621).

Almost surely, 2^2561097241 is an apocalyptic number.

It is an amenable number.

2561097241 is a deficient number, since it is larger than the sum of its proper divisors (1).

2561097241 is an equidigital number, since it uses as much as digits as its factorization.

2561097241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2561097241 is about 50607.2844657763. The cubic root of 2561097241 is about 1368.1761727290.

Adding to 2561097241 its reverse (1427901652), we get a palindrome (3988998893).

The spelling of 2561097241 in words is "two billion, five hundred sixty-one million, ninety-seven thousand, two hundred forty-one".