11540443 has 4 divisors (see below), whose sum is σ = 11554480. Its totient is φ = 11526408.

The previous prime is 11540423. The next prime is 11540447. The reversal of 11540443 is 34404511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34404511 = 1721 ⋅19991.

It is a cyclic number.

It is not a de Polignac number, because 11540443 - 2¹³ = 11532251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11540447) 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, 5703 + ... + 7456.

It is an arithmetic number, because the mean of its divisors is an integer number (2888620).

Almost surely, 2^11540443 is an apocalyptic number.

11540443 is a deficient number, since it is larger than the sum of its proper divisors (14037).

11540443 is an equidigital number, since it uses as much as digits as its factorization.

11540443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14036.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 11540443 is about 3397.1227531545. The cubic root of 11540443 is about 225.9821624265.

Adding to 11540443 its reverse (34404511), we get a palindrome (45944954).

The spelling of 11540443 in words is "eleven million, five hundred forty thousand, four hundred forty-three".