12884545 has 4 divisors (see below), whose sum is σ = 15461460. Its totient is φ = 10307632.

The previous prime is 12884507. The next prime is 12884549. The reversal of 12884545 is 54548821.

12884545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54548821 = 3461 ⋅15761.

It can be written as a sum of positive squares in 2 ways, for example, as 3908529 + 8976016 = 1977^2 + 2996^2 .

It is a cyclic number.

It is not a de Polignac number, because 12884545 - 2¹⁵ = 12851777 is a prime.

It is a super-2 number, since 2×12884545² = 332022999714050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12884549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288450 + ... + 1288459.

It is an arithmetic number, because the mean of its divisors is an integer number (3865365).

Almost surely, 2^12884545 is an apocalyptic number.

It is an amenable number.

12884545 is a deficient number, since it is larger than the sum of its proper divisors (2576915).

12884545 is an equidigital number, since it uses as much as digits as its factorization.

12884545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576914.

The product of its digits is 51200, while the sum is 37.

The square root of 12884545 is about 3589.5048405038. The cubic root of 12884545 is about 234.4353123598.

The spelling of 12884545 in words is "twelve million, eight hundred eighty-four thousand, five hundred forty-five".