13355609 has 2 divisors, whose sum is σ = 13355610. Its totient is φ = 13355608.

The previous prime is 13355603. The next prime is 13355611. The reversal of 13355609 is 90655331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12581209 + 774400 = 3547^2 + 880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13355609 is a prime.

Together with 13355611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13355603) 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 as a sum of consecutive naturals, namely, 6677804 + 6677805.

It is an arithmetic number, because the mean of its divisors is an integer number (6677805).

Almost surely, 2^13355609 is an apocalyptic number.

It is an amenable number.

13355609 is a deficient number, since it is larger than the sum of its proper divisors (1).

13355609 is an equidigital number, since it uses as much as digits as its factorization.

13355609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 13355609 is about 3654.5326650613. The cubic root of 13355609 is about 237.2582004440.

The spelling of 13355609 in words is "thirteen million, three hundred fifty-five thousand, six hundred nine".