2561226 has 8 divisors (see below), whose sum is σ = 5122464. Its totient is φ = 853740.

The previous prime is 2561201. The next prime is 2561227. The reversal of 2561226 is 6221652.

It is a sphenic number, since it is the product of 3 distinct primes.

2561226 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2561196 and 2561205.

It is not an unprimeable number, because it can be changed into a prime (2561227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213430 + ... + 213441.

It is an arithmetic number, because the mean of its divisors is an integer number (640308).

2^2561226 is an apocalyptic number.

2561226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2561226 is a wasteful number, since it uses less digits than its factorization.

2561226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426876.

The product of its digits is 1440, while the sum is 24.

The square root of 2561226 is about 1600.3830791407. The cubic root of 2561226 is about 136.8199100668.

Adding to 2561226 its reverse (6221652), we get a palindrome (8782878).

The spelling of 2561226 in words is "two million, five hundred sixty-one thousand, two hundred twenty-six".