2543522869 has 2 divisors, whose sum is σ = 2543522870. Its totient is φ = 2543522868.

The previous prime is 2543522801. The next prime is 2543522893. The reversal of 2543522869 is 9682253452.

2543522869 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., 1502492644 + 1041030225 = 38762^2 + 32265^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543522869 - 2⁷ = 2543522741 is a prime.

It is a super-2 number, since 2×2543522869² = 12939017170251982322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543522899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271761434 + 1271761435.

It is an arithmetic number, because the mean of its divisors is an integer number (1271761435).

Almost surely, 2^2543522869 is an apocalyptic number.

It is an amenable number.

2543522869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543522869 is an equidigital number, since it uses as much as digits as its factorization.

2543522869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 46.

The square root of 2543522869 is about 50433.3507611779. The cubic root of 2543522869 is about 1365.0394902412.

The spelling of 2543522869 in words is "two billion, five hundred forty-three million, five hundred twenty-two thousand, eight hundred sixty-nine".