11204543 has 4 divisors (see below), whose sum is σ = 12805200. Its totient is φ = 9603888.

The previous prime is 11204539. The next prime is 11204549. The reversal of 11204543 is 34540211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34540211 = 479 ⋅72109.

It is not a de Polignac number, because 11204543 - 2² = 11204539 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 (11204549) 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, 800318 + ... + 800331.

It is an arithmetic number, because the mean of its divisors is an integer number (3201300).

Almost surely, 2^11204543 is an apocalyptic number.

11204543 is a deficient number, since it is larger than the sum of its proper divisors (1600657).

11204543 is an equidigital number, since it uses as much as digits as its factorization.

11204543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600656.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 11204543 is about 3347.3187777683. The cubic root of 11204543 is about 223.7680355405.

Adding to 11204543 its reverse (34540211), we get a palindrome (45744754).

The spelling of 11204543 in words is "eleven million, two hundred four thousand, five hundred forty-three".