11543355 has 48 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 5569344.

The previous prime is 11543353. The next prime is 11543381. The reversal of 11543355 is 55334511.

It is not a de Polignac number, because 11543355 - 2¹ = 11543353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11543351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19372 + ... + 19958.

It is an arithmetic number, because the mean of its divisors is an integer number (458640).

Almost surely, 2^11543355 is an apocalyptic number.

11543355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11543355 is a deficient number, since it is larger than the sum of its proper divisors (10471365).

11543355 is a wasteful number, since it uses less digits than its factorization.

11543355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 637 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 11543355 is about 3397.5513241156. The cubic root of 11543355 is about 226.0011681878.

Adding to 11543355 its reverse (55334511), we get a palindrome (66877866).

The spelling of 11543355 in words is "eleven million, five hundred forty-three thousand, three hundred fifty-five".