12566045 has 4 divisors (see below), whose sum is σ = 15079260. Its totient is φ = 10052832.

The previous prime is 12566041. The next prime is 12566053. The reversal of 12566045 is 54066521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8637721 + 3928324 = 2939^2 + 1982^2 .

It is a cyclic number.

It is not a de Polignac number, because 12566045 - 2² = 12566041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12565999 and 12566017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12566041) 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 3 ways as a sum of consecutive naturals, for example, 1256600 + ... + 1256609.

It is an arithmetic number, because the mean of its divisors is an integer number (3769815).

Almost surely, 2^12566045 is an apocalyptic number.

It is an amenable number.

12566045 is a deficient number, since it is larger than the sum of its proper divisors (2513215).

12566045 is an equidigital number, since it uses as much as digits as its factorization.

12566045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513214.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 12566045 is about 3544.8617744561. The cubic root of 12566045 is about 232.4874622291.

The spelling of 12566045 in words is "twelve million, five hundred sixty-six thousand, forty-five".