2543424497 has 4 divisors (see below), whose sum is σ = 2631128820. Its totient is φ = 2455720176.

The previous prime is 2543424491. The next prime is 2543424517. The reversal of 2543424497 is 7944243452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2008473856 + 534950641 = 44816^2 + 23129^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543424497 - 2⁸ = 2543424241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2543424491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43852118 + ... + 43852175.

It is an arithmetic number, because the mean of its divisors is an integer number (657782205).

Almost surely, 2^2543424497 is an apocalyptic number.

It is an amenable number.

2543424497 is a deficient number, since it is larger than the sum of its proper divisors (87704323).

2543424497 is an equidigital number, since it uses as much as digits as its factorization.

2543424497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87704322.

The product of its digits is 967680, while the sum is 44.

The square root of 2543424497 is about 50432.3754844049. The cubic root of 2543424497 is about 1365.0218921561.

The spelling of 2543424497 in words is "two billion, five hundred forty-three million, four hundred twenty-four thousand, four hundred ninety-seven".