2561106226 has 32 divisors (see below), whose sum is σ = 4485600000. Its totient is φ = 1096262496.

The previous prime is 2561106221. The next prime is 2561106239. The reversal of 2561106226 is 6226011652.

It is not an unprimeable number, because it can be changed into a prime (2561106221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717835 + ... + 721393.

It is an arithmetic number, because the mean of its divisors is an integer number (140175000).

Almost surely, 2^2561106226 is an apocalyptic number.

2561106226 is a deficient number, since it is larger than the sum of its proper divisors (1924493774).

2561106226 is a wasteful number, since it uses less digits than its factorization.

2561106226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631 (or 4617 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2561106226 is about 50607.3732375036. The cubic root of 2561106226 is about 1368.1777727006.

Adding to 2561106226 its reverse (6226011652), we get a palindrome (8787117878).

The spelling of 2561106226 in words is "two billion, five hundred sixty-one million, one hundred six thousand, two hundred twenty-six".