1004543 has 4 divisors (see below), whose sum is σ = 1015920. Its totient is φ = 993168.

The previous prime is 1004537. The next prime is 1004551. The reversal of 1004543 is 3454001.

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 1004543 - 2⁴ = 1004527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004743) 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, 5555 + ... + 5732.

It is an arithmetic number, because the mean of its divisors is an integer number (253980).

2^1004543 is an apocalyptic number.

1004543 is a deficient number, since it is larger than the sum of its proper divisors (11377).

1004543 is an equidigital number, since it uses as much as digits as its factorization.

1004543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11376.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1004543 is about 1002.2689259874. The cubic root of 1004543 is about 100.1512045898.

Adding to 1004543 its reverse (3454001), we get a palindrome (4458544).

The spelling of 1004543 in words is "one million, four thousand, five hundred forty-three".