13555443 has 32 divisors (see below), whose sum is σ = 21226752. Its totient is φ = 7603200.

The previous prime is 13555433. The next prime is 13555447. The reversal of 13555443 is 34455531.

It is not a de Polignac number, because 13555443 - 2⁸ = 13555187 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 13555443.

It is not an unprimeable number, because it can be changed into a prime (13555447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40788 + ... + 41118.

It is an arithmetic number, because the mean of its divisors is an integer number (663336).

Almost surely, 2^13555443 is an apocalyptic number.

13555443 is a deficient number, since it is larger than the sum of its proper divisors (7671309).

13555443 is a wasteful number, since it uses less digits than its factorization.

13555443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its digits is 18000, while the sum is 30.

The square root of 13555443 is about 3681.7717202456. The cubic root of 13555443 is about 238.4356765651.

The spelling of 13555443 in words is "thirteen million, five hundred fifty-five thousand, four hundred forty-three".