13555567 has 4 divisors (see below), whose sum is σ = 13680040. Its totient is φ = 13431096.

The previous prime is 13555561. The next prime is 13555583. The reversal of 13555567 is 76555531.

13555567 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76555531 = 13 ⋅5888887.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13555567 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13555561) 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, 62073 + ... + 62290.

It is an arithmetic number, because the mean of its divisors is an integer number (3420010).

Almost surely, 2^13555567 is an apocalyptic number.

13555567 is a deficient number, since it is larger than the sum of its proper divisors (124473).

13555567 is a wasteful number, since it uses less digits than its factorization.

13555567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124472.

The product of its digits is 78750, while the sum is 37.

The square root of 13555567 is about 3681.7885599257. The cubic root of 13555567 is about 238.4364036023.

The spelling of 13555567 in words is "thirteen million, five hundred fifty-five thousand, five hundred sixty-seven".