2543244409 has 2 divisors, whose sum is σ = 2543244410. Its totient is φ = 2543244408.

The previous prime is 2543244377. The next prime is 2543244427. The reversal of 2543244409 is 9044423452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1722250000 + 820994409 = 41500^2 + 28653^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543244409 - 2⁵ = 2543244377 is a prime.

It is not a weakly prime, because it can be changed into another prime (2543244439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271622204 + 1271622205.

It is an arithmetic number, because the mean of its divisors is an integer number (1271622205).

Almost surely, 2^2543244409 is an apocalyptic number.

It is an amenable number.

2543244409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543244409 is an equidigital number, since it uses as much as digits as its factorization.

2543244409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 2543244409 is about 50430.5900124121. The cubic root of 2543244409 is about 1364.9896744557.

The spelling of 2543244409 in words is "two billion, five hundred forty-three million, two hundred forty-four thousand, four hundred nine".