13055559 has 32 divisors (see below), whose sum is σ = 20127744. Its totient is φ = 7450080.

The previous prime is 13055533. The next prime is 13055569. The reversal of 13055559 is 95555031.

It is not a de Polignac number, because 13055559 - 2⁷ = 13055431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13055509) 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 31 ways as a sum of consecutive naturals, for example, 78094 + ... + 78260.

It is an arithmetic number, because the mean of its divisors is an integer number (628992).

Almost surely, 2^13055559 is an apocalyptic number.

13055559 is a deficient number, since it is larger than the sum of its proper divisors (7072185).

13055559 is a wasteful number, since it uses less digits than its factorization.

13055559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307.

The product of its (nonzero) digits is 16875, while the sum is 33.

The square root of 13055559 is about 3613.2477080876. The cubic root of 13055559 is about 235.4679614368.

The spelling of 13055559 in words is "thirteen million, fifty-five thousand, five hundred fifty-nine".