13122855 has 12 divisors (see below), whose sum is σ = 22746360. Its totient is φ = 6998832.

The previous prime is 13122841. The next prime is 13122871. The reversal of 13122855 is 55822131.

It is a happy number.

13122855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13122855 - 2⁷ = 13122727 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145765 + ... + 145854.

It is an arithmetic number, because the mean of its divisors is an integer number (1895530).

Almost surely, 2^13122855 is an apocalyptic number.

13122855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13122855 is a deficient number, since it is larger than the sum of its proper divisors (9623505).

13122855 is a wasteful number, since it uses less digits than its factorization.

13122855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291630 (or 291627 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 13122855 is about 3622.5481363261. The cubic root of 13122855 is about 235.8718482159.

Adding to 13122855 its reverse (55822131), we get a palindrome (68944986).

The spelling of 13122855 in words is "thirteen million, one hundred twenty-two thousand, eight hundred fifty-five".