13078555 has 32 divisors (see below), whose sum is σ = 19215360. Its totient is φ = 8346240.

The previous prime is 13078553. The next prime is 13078561. The reversal of 13078555 is 55587031.

It is not a de Polignac number, because 13078555 - 2¹ = 13078553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13078555.

It is not an unprimeable number, because it can be changed into a prime (13078553) 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 31 ways as a sum of consecutive naturals, for example, 47077 + ... + 47353.

It is an arithmetic number, because the mean of its divisors is an integer number (600480).

Almost surely, 2^13078555 is an apocalyptic number.

13078555 is a deficient number, since it is larger than the sum of its proper divisors (6136805).

13078555 is a wasteful number, since it uses less digits than its factorization.

13078555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 13078555 is about 3616.4284867808. The cubic root of 13078555 is about 235.6061310634.

The spelling of 13078555 in words is "thirteen million, seventy-eight thousand, five hundred fifty-five".