12557229 has 8 divisors (see below), whose sum is σ = 16909152. Its totient is φ = 8288400.

The previous prime is 12557227. The next prime is 12557239. The reversal of 12557229 is 92275521.

It is a happy number.

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

It is not a de Polignac number, because 12557229 - 2¹ = 12557227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12557229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20419 + ... + 21024.

It is an arithmetic number, because the mean of its divisors is an integer number (2113644).

Almost surely, 2^12557229 is an apocalyptic number.

It is an amenable number.

12557229 is a deficient number, since it is larger than the sum of its proper divisors (4351923).

12557229 is a wasteful number, since it uses less digits than its factorization.

12557229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41547.

The product of its digits is 12600, while the sum is 33.

The square root of 12557229 is about 3543.6180663271. The cubic root of 12557229 is about 232.4330805210.

The spelling of 12557229 in words is "twelve million, five hundred fifty-seven thousand, two hundred twenty-nine".