2566516 has 12 divisors (see below), whose sum is σ = 4515588. Its totient is φ = 1276352.

The previous prime is 2566513. The next prime is 2566517. The reversal of 2566516 is 6156652.

2566516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2390116 + 176400 = 1546^2 + 420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566513) 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, 841 + ... + 2416.

It is an arithmetic number, because the mean of its divisors is an integer number (376299).

2^2566516 is an apocalyptic number.

It is an amenable number.

2566516 is a deficient number, since it is larger than the sum of its proper divisors (1949072).

2566516 is a wasteful number, since it uses less digits than its factorization.

2566516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458 (or 3456 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 2566516 is about 1602.0349559232. The cubic root of 2566516 is about 136.9140420170.

The spelling of 2566516 in words is "two million, five hundred sixty-six thousand, five hundred sixteen".