13280559 has 4 divisors (see below), whose sum is σ = 17707416. Its totient is φ = 8853704.

The previous prime is 13280503. The next prime is 13280573. The reversal of 13280559 is 95508231.

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

It is a cyclic number.

It is not a de Polignac number, because 13280559 - 2⁸ = 13280303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280599) 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 in 3 ways as a sum of consecutive naturals, for example, 2213424 + ... + 2213429.

It is an arithmetic number, because the mean of its divisors is an integer number (4426854).

Almost surely, 2^13280559 is an apocalyptic number.

13280559 is a deficient number, since it is larger than the sum of its proper divisors (4426857).

13280559 is an equidigital number, since it uses as much as digits as its factorization.

13280559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426856.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 13280559 is about 3644.2501286273. The cubic root of 13280559 is about 236.8129521674.

The spelling of 13280559 in words is "thirteen million, two hundred eighty thousand, five hundred fifty-nine".