2562661 has 2 divisors, whose sum is σ = 2562662. Its totient is φ = 2562660.

The previous prime is 2562641. The next prime is 2562667. The reversal of 2562661 is 1662652.

2562661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2232036 + 330625 = 1494^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 2562661 - 2⁵ = 2562629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2562667) 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 as a sum of consecutive naturals, namely, 1281330 + 1281331.

It is an arithmetic number, because the mean of its divisors is an integer number (1281331).

2^2562661 is an apocalyptic number.

It is an amenable number.

2562661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2562661 is an equidigital number, since it uses as much as digits as its factorization.

2562661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 2562661 is about 1600.8313465197. The cubic root of 2562661 is about 136.8454577166.

Subtracting from 2562661 its reverse (1662652), we obtain a palindrome (900009).

It can be divided in two parts, 2562 and 661, that added together give a palindrome (3223).

The spelling of 2562661 in words is "two million, five hundred sixty-two thousand, six hundred sixty-one".