2543019 has 4 divisors (see below), whose sum is σ = 3390696. Its totient is φ = 1695344.

The previous prime is 2542999. The next prime is 2543027. The reversal of 2543019 is 9103452.

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

It is a cyclic number.

It is not a de Polignac number, because 2543019 - 2⁵ = 2542987 is a prime.

It is a super-2 number, since 2×2543019² = 12933891268722, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2543019.

It is not an unprimeable number, because it can be changed into a prime (2543059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423834 + ... + 423839.

It is an arithmetic number, because the mean of its divisors is an integer number (847674).

2^2543019 is an apocalyptic number.

2543019 is a deficient number, since it is larger than the sum of its proper divisors (847677).

2543019 is an equidigital number, since it uses as much as digits as its factorization.

2543019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847676.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2543019 is about 1594.6846083160. The cubic root of 2543019 is about 136.4949346696.

The spelling of 2543019 in words is "two million, five hundred forty-three thousand, nineteen".