12556803 has 16 divisors (see below), whose sum is σ = 19398656. Its totient is φ = 7076160.

The previous prime is 12556799. The next prime is 12556811. The reversal of 12556803 is 30865521.

It is not a de Polignac number, because 12556803 - 2² = 12556799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12566803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2563 + ... + 5628.

It is an arithmetic number, because the mean of its divisors is an integer number (1212416).

Almost surely, 2^12556803 is an apocalyptic number.

12556803 is a deficient number, since it is larger than the sum of its proper divisors (6841853).

12556803 is an equidigital number, since it uses as much as digits as its factorization.

12556803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8274.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 12556803 is about 3543.5579577594. The cubic root of 12556803 is about 232.4304520852.

The spelling of 12556803 in words is "twelve million, five hundred fifty-six thousand, eight hundred three".