2543899 has 2 divisors, whose sum is σ = 2543900. Its totient is φ = 2543898.

The previous prime is 2543873. The next prime is 2543917. The reversal of 2543899 is 9983452.

It is a happy number.

2543899 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 is a cyclic number.

It is not a de Polignac number, because 2543899 - 2⁷ = 2543771 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2543809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271949 + 1271950.

It is an arithmetic number, because the mean of its divisors is an integer number (1271950).

2^2543899 is an apocalyptic number.

2543899 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543899 is an equidigital number, since it uses as much as digits as its factorization.

2543899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 2543899 is about 1594.9605010783. The cubic root of 2543899 is about 136.5106773348.

The spelling of 2543899 in words is "two million, five hundred forty-three thousand, eight hundred ninety-nine".