12855519 has 24 divisors (see below), whose sum is σ = 19948032. Its totient is φ = 7948800.

The previous prime is 12855511. The next prime is 12855527. The reversal of 12855519 is 91555821.

It is a happy number.

12855519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12855511) and next prime (12855527).

It is not a de Polignac number, because 12855519 - 2³ = 12855511 is a prime.

It is a super-2 number, since 2×12855519² = 330528737518722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10594 + ... + 11744.

It is an arithmetic number, because the mean of its divisors is an integer number (831168).

Almost surely, 2^12855519 is an apocalyptic number.

12855519 is a deficient number, since it is larger than the sum of its proper divisors (7092513).

12855519 is a wasteful number, since it uses less digits than its factorization.

12855519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1244 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 12855519 is about 3585.4593847930. The cubic root of 12855519 is about 234.2591365456.

The spelling of 12855519 in words is "twelve million, eight hundred fifty-five thousand, five hundred nineteen".