2566404052 has 6 divisors (see below), whose sum is σ = 4491207098. Its totient is φ = 1283202024.

The previous prime is 2566404047. The next prime is 2566404053. The reversal of 2566404052 is 2504046652.

It can be written as a sum of positive squares in only one way, i.e., 2289048336 + 277355716 = 47844^2 + 16654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2566403999 and 2566404017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566404053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320800503 + ... + 320800510.

Almost surely, 2^2566404052 is an apocalyptic number.

It is an amenable number.

2566404052 is a deficient number, since it is larger than the sum of its proper divisors (1924803046).

2566404052 is a wasteful number, since it uses less digits than its factorization.

2566404052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641601017 (or 641601015 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2566404052 is about 50659.6886291260. The cubic root of 2566404052 is about 1369.1205131880.

The spelling of 2566404052 in words is "two billion, five hundred sixty-six million, four hundred four thousand, fifty-two".