11453543 has 4 divisors (see below), whose sum is σ = 11641368. Its totient is φ = 11265720.

The previous prime is 11453537. The next prime is 11453549. The reversal of 11453543 is 34535411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34535411 = 853 ⋅40487.

It is an interprime number because it is at equal distance from previous prime (11453537) and next prime (11453549).

It is a cyclic number.

It is not a de Polignac number, because 11453543 - 2¹⁴ = 11437159 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 (11453549) 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, 93821 + ... + 93942.

It is an arithmetic number, because the mean of its divisors is an integer number (2910342).

Almost surely, 2^11453543 is an apocalyptic number.

11453543 is a deficient number, since it is larger than the sum of its proper divisors (187825).

11453543 is an equidigital number, since it uses as much as digits as its factorization.

11453543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187824.

The product of its digits is 3600, while the sum is 26.

The square root of 11453543 is about 3384.3083488358. The cubic root of 11453543 is about 225.4135144573.

Adding to 11453543 its reverse (34535411), we get a palindrome (45988954).

The spelling of 11453543 in words is "eleven million, four hundred fifty-three thousand, five hundred forty-three".