2561106103 has 2 divisors, whose sum is σ = 2561106104. Its totient is φ = 2561106102.

The previous prime is 2561106089. The next prime is 2561106113. The reversal of 2561106103 is 3016011652.

2561106103 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 is a cyclic number.

It is not a de Polignac number, because 2561106103 - 2¹³ = 2561097911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2561106113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280553051 + 1280553052.

It is an arithmetic number, because the mean of its divisors is an integer number (1280553052).

Almost surely, 2^2561106103 is an apocalyptic number.

2561106103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2561106103 is an equidigital number, since it uses as much as digits as its factorization.

2561106103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2561106103 is about 50607.3720222657. The cubic root of 2561106103 is about 1368.1777507978.

Adding to 2561106103 its reverse (3016011652), we get a palindrome (5577117755).

The spelling of 2561106103 in words is "two billion, five hundred sixty-one million, one hundred six thousand, one hundred three".