13553843 has 4 divisors (see below), whose sum is σ = 13612248. Its totient is φ = 13495440.

The previous prime is 13553833. The next prime is 13553857. The reversal of 13553843 is 34835531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13553843 - 2⁶ = 13553779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13553833) 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, 28853 + ... + 29318.

It is an arithmetic number, because the mean of its divisors is an integer number (3403062).

Almost surely, 2^13553843 is an apocalyptic number.

13553843 is a deficient number, since it is larger than the sum of its proper divisors (58405).

13553843 is an equidigital number, since it uses as much as digits as its factorization.

13553843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58404.

The product of its digits is 21600, while the sum is 32.

The square root of 13553843 is about 3681.5544271408. The cubic root of 13553843 is about 238.4262950423.

The spelling of 13553843 in words is "thirteen million, five hundred fifty-three thousand, eight hundred forty-three".