13555423 has 4 divisors (see below), whose sum is σ = 15491920. Its totient is φ = 11618928.

The previous prime is 13555403. The next prime is 13555429. The reversal of 13555423 is 32455531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13555423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13555391 and 13555400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13555429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968238 + ... + 968251.

It is an arithmetic number, because the mean of its divisors is an integer number (3872980).

Almost surely, 2^13555423 is an apocalyptic number.

13555423 is a deficient number, since it is larger than the sum of its proper divisors (1936497).

13555423 is an equidigital number, since it uses as much as digits as its factorization.

13555423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936496.

The product of its digits is 9000, while the sum is 28.

The square root of 13555423 is about 3681.7690041609. The cubic root of 13555423 is about 238.4355593006.

The spelling of 13555423 in words is "thirteen million, five hundred fifty-five thousand, four hundred twenty-three".