11543805 has 48 divisors (see below), whose sum is σ = 24635520. Its totient is φ = 4869504.

The previous prime is 11543789. The next prime is 11543809. The reversal of 11543805 is 50834511.

11543805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11543805 - 2⁴ = 11543789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543809) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2686 + ... + 5504.

It is an arithmetic number, because the mean of its divisors is an integer number (513240).

Almost surely, 2^11543805 is an apocalyptic number.

11543805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11543805 is an abundant number, since it is smaller than the sum of its proper divisors (13091715).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11543805 is a wasteful number, since it uses less digits than its factorization.

11543805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850 (or 2847 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 11543805 is about 3397.6175476354. The cubic root of 11543805 is about 226.0041049193.

The spelling of 11543805 in words is "eleven million, five hundred forty-three thousand, eight hundred five".