2566504 has 16 divisors (see below), whose sum is σ = 4829220. Its totient is φ = 1278720.

The previous prime is 2566489. The next prime is 2566513. The reversal of 2566504 is 4056652.

It can be written as a sum of positive squares in 2 ways, for example, as 2566404 + 100 = 1602^2 + 10^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4032 + ... + 4624.

2^2566504 is an apocalyptic number.

It is an amenable number.

2566504 is a deficient number, since it is larger than the sum of its proper divisors (2262716).

2566504 is a wasteful number, since it uses less digits than its factorization.

2566504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2566504 is about 1602.0312106822. The cubic root of 2566504 is about 136.9138286316.

The spelling of 2566504 in words is "two million, five hundred sixty-six thousand, five hundred four".