13455855 has 64 divisors (see below), whose sum is σ = 28339200. Its totient is φ = 5927040.

The previous prime is 13455853. The next prime is 13455881. The reversal of 13455855 is 55855431.

It is a happy number.

It is not a de Polignac number, because 13455855 - 2¹ = 13455853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13455853) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27160 + ... + 27650.

It is an arithmetic number, because the mean of its divisors is an integer number (442800).

Almost surely, 2^13455855 is an apocalyptic number.

13455855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13455855 is an abundant number, since it is smaller than the sum of its proper divisors (14883345).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13455855 is a wasteful number, since it uses less digits than its factorization.

13455855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 535 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 13455855 is about 3668.2223215067. Note that the first 3 decimals coincide. The cubic root of 13455855 is about 237.8503343095.

The spelling of 13455855 in words is "thirteen million, four hundred fifty-five thousand, eight hundred fifty-five".