12555224 has 16 divisors (see below), whose sum is σ = 25681320. Its totient is φ = 5706880.

The previous prime is 12555199. The next prime is 12555241. The reversal of 12555224 is 42255521.

It is a junction number, because it is equal to n+sod(n) for n = 12555193 and 12555202.

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, 71249 + ... + 71424.

Almost surely, 2^12555224 is an apocalyptic number.

It is an amenable number.

12555224 is an abundant number, since it is smaller than the sum of its proper divisors (13126096).

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

12555224 is a wasteful number, since it uses less digits than its factorization.

12555224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142690 (or 142686 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 12555224 is about 3543.3351520848. The cubic root of 12555224 is about 232.4207090779.

The spelling of 12555224 in words is "twelve million, five hundred fifty-five thousand, two hundred twenty-four".