2562221 has 4 divisors (see below), whose sum is σ = 2591100. Its totient is φ = 2533344.

The previous prime is 2562199. The next prime is 2562233. The reversal of 2562221 is 1222652.

2562221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1406596 + 1155625 = 1186^2 + 1075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2562221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2562193 and 2562202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2562251) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 14306 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (647775).

2^2562221 is an apocalyptic number.

It is an amenable number.

2562221 is a deficient number, since it is larger than the sum of its proper divisors (28879).

2562221 is an equidigital number, since it uses as much as digits as its factorization.

2562221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28878.

The product of its digits is 480, while the sum is 20.

The square root of 2562221 is about 1600.6939120269. The cubic root of 2562221 is about 136.8376253049.

Adding to 2562221 its reverse (1222652), we get a palindrome (3784873).

The spelling of 2562221 in words is "two million, five hundred sixty-two thousand, two hundred twenty-one".