11265543 has 24 divisors (see below), whose sum is σ = 17830800. Its totient is φ = 6822144.

The previous prime is 11265523. The next prime is 11265547. The reversal of 11265543 is 34556211.

11265543 is a `hidden beast` number, since 1 + 1 + 2 + 655 + 4 + 3 = 666.

It is not a de Polignac number, because 11265543 - 2⁵ = 11265511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11265547) 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 23 ways as a sum of consecutive naturals, for example, 3168 + ... + 5706.

It is an arithmetic number, because the mean of its divisors is an integer number (742950).

Almost surely, 2^11265543 is an apocalyptic number.

11265543 is a deficient number, since it is larger than the sum of its proper divisors (6565257).

11265543 is a wasteful number, since it uses less digits than its factorization.

11265543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591 (or 2588 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 11265543 is about 3356.4181801438. The cubic root of 11265543 is about 224.1733816543.

The spelling of 11265543 in words is "eleven million, two hundred sixty-five thousand, five hundred forty-three".