13138855 has 4 divisors (see below), whose sum is σ = 15766632. Its totient is φ = 10511080.

The previous prime is 13138837. The next prime is 13138877. The reversal of 13138855 is 55883131.

13138855 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13138855 - 2⁹ = 13138343 is a prime.

It is a super-2 number, since 2×13138855² = 345259021422050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13138855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1313881 + ... + 1313890.

It is an arithmetic number, because the mean of its divisors is an integer number (3941658).

Almost surely, 2^13138855 is an apocalyptic number.

13138855 is a deficient number, since it is larger than the sum of its proper divisors (2627777).

13138855 is an equidigital number, since it uses as much as digits as its factorization.

13138855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627776.

The product of its digits is 14400, while the sum is 34.

The square root of 13138855 is about 3624.7558538473. The cubic root of 13138855 is about 235.9676712874.

The spelling of 13138855 in words is "thirteen million, one hundred thirty-eight thousand, eight hundred fifty-five".