2543804 has 12 divisors (see below), whose sum is σ = 4560528. Its totient is φ = 1240800.

The previous prime is 2543797. The next prime is 2543809. The reversal of 2543804 is 4083452.

2543804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a 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 in 3 ways as a sum of consecutive naturals, for example, 7592 + ... + 7919.

It is an arithmetic number, because the mean of its divisors is an integer number (380044).

2^2543804 is an apocalyptic number.

It is an amenable number.

2543804 is a deficient number, since it is larger than the sum of its proper divisors (2016724).

2543804 is a wasteful number, since it uses less digits than its factorization.

2543804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15556 (or 15554 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2543804 is about 1594.9307194985. The cubic root of 2543804 is about 136.5089780174.

The spelling of 2543804 in words is "two million, five hundred forty-three thousand, eight hundred four".