2561106 has 32 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 801920.

The previous prime is 2561099. The next prime is 2561129. The reversal of 2561106 is 6011652.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6955 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2^2561106 is an apocalyptic number.

2561106 is an abundant number, since it is smaller than the sum of its proper divisors (2882094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561106 is a wasteful number, since it uses less digits than its factorization.

2561106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2561106 is about 1600.3455876779. The cubic root of 2561106 is about 136.8177732456.

Adding to 2561106 its reverse (6011652), we get a palindrome (8572758).

The spelling of 2561106 in words is "two million, five hundred sixty-one thousand, one hundred six".