13551109 has 16 divisors (see below), whose sum is σ = 16035264. Its totient is φ = 11289600.

The previous prime is 13551101. The next prime is 13551113. The reversal of 13551109 is 90115531.

It is a cyclic number.

It is not a de Polignac number, because 13551109 - 2³ = 13551101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551101) 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 15 ways as a sum of consecutive naturals, for example, 27354 + ... + 27844.

It is an arithmetic number, because the mean of its divisors is an integer number (1002204).

Almost surely, 2^13551109 is an apocalyptic number.

It is an amenable number.

13551109 is a deficient number, since it is larger than the sum of its proper divisors (2484155).

13551109 is a wasteful number, since it uses less digits than its factorization.

13551109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 13551109 is about 3681.1830978641. The cubic root of 13551109 is about 238.4102626563.

The spelling of 13551109 in words is "thirteen million, five hundred fifty-one thousand, one hundred nine".