11261543 has 2 divisors, whose sum is σ = 11261544. Its totient is φ = 11261542.

The previous prime is 11261539. The next prime is 11261563. The reversal of 11261543 is 34516211.

11261543 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (34516211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11261543 - 2² = 11261539 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11261563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5630771 + 5630772.

It is an arithmetic number, because the mean of its divisors is an integer number (5630772).

Almost surely, 2^11261543 is an apocalyptic number.

11261543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11261543 is an equidigital number, since it uses as much as digits as its factorization.

11261543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 11261543 is about 3355.8222539342. The cubic root of 11261543 is about 224.1468464731.

Adding to 11261543 its reverse (34516211), we get a palindrome (45777754).

The spelling of 11261543 in words is "eleven million, two hundred sixty-one thousand, five hundred forty-three".