2561212 has 6 divisors (see below), whose sum is σ = 4482128. Its totient is φ = 1280604.

The previous prime is 2561201. The next prime is 2561227. The reversal of 2561212 is 2121652.

2561212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

2561212 is a modest number, since divided by 1212 gives 256 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2561212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320148 + ... + 320155.

2^2561212 is an apocalyptic number.

It is an amenable number.

2561212 is a deficient number, since it is larger than the sum of its proper divisors (1920916).

2561212 is a wasteful number, since it uses less digits than its factorization.

2561212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640307 (or 640305 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 2561212 is about 1600.3787051820. The cubic root of 2561212 is about 136.8196607744.

Adding to 2561212 its reverse (2121652), we get a palindrome (4682864).

The spelling of 2561212 in words is "two million, five hundred sixty-one thousand, two hundred twelve".