12553222 has 8 divisors (see below), whose sum is σ = 20541672. Its totient is φ = 5706000.

The previous prime is 12553213. The next prime is 12553241. The reversal of 12553222 is 22235521.

12553222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 570601 = 12553222 / (1 + 2 + 5 + 5 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 12553193 and 12553202.

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, 285279 + ... + 285322.

It is an arithmetic number, because the mean of its divisors is an integer number (2567709).

Almost surely, 2^12553222 is an apocalyptic number.

12553222 is a deficient number, since it is larger than the sum of its proper divisors (7988450).

12553222 is a wasteful number, since it uses less digits than its factorization.

12553222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570614.

The product of its digits is 1200, while the sum is 22.

The square root of 12553222 is about 3543.0526386155. The cubic root of 12553222 is about 232.4083548315.

Adding to 12553222 its reverse (22235521), we get a palindrome (34788743).

The spelling of 12553222 in words is "twelve million, five hundred fifty-three thousand, two hundred twenty-two".