12556105 has 8 divisors (see below), whose sum is σ = 15086664. Its totient is φ = 10032000.

The previous prime is 12556099. The next prime is 12556111. The reversal of 12556105 is 50165521.

It is an interprime number because it is at equal distance from previous prime (12556099) and next prime (12556111).

It can be written as a sum of positive squares in 4 ways, for example, as 1320201 + 11235904 = 1149^2 + 3352^2 .

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

It is not a de Polignac number, because 12556105 - 2⁹ = 12555593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12556105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5655 + ... + 7555.

It is an arithmetic number, because the mean of its divisors is an integer number (1885833).

Almost surely, 2^12556105 is an apocalyptic number.

It is an amenable number.

12556105 is a deficient number, since it is larger than the sum of its proper divisors (2530559).

12556105 is a wasteful number, since it uses less digits than its factorization.

12556105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 12556105 is about 3543.4594678083. The cubic root of 12556105 is about 232.4261452707.

The spelling of 12556105 in words is "twelve million, five hundred fifty-six thousand, one hundred five".