12045775 has 24 divisors (see below), whose sum is σ = 18079200. Its totient is φ = 7772160.

The previous prime is 12045773. The next prime is 12045793. The reversal of 12045775 is 57754021.

It is not a de Polignac number, because 12045775 - 2¹ = 12045773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12045773) 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 23 ways as a sum of consecutive naturals, for example, 951 + ... + 4999.

It is an arithmetic number, because the mean of its divisors is an integer number (753300).

Almost surely, 2^12045775 is an apocalyptic number.

12045775 is a deficient number, since it is larger than the sum of its proper divisors (6033425).

12045775 is a wasteful number, since it uses less digits than its factorization.

12045775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083 (or 4078 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 12045775 is about 3470.7023784819. The cubic root of 12045775 is about 229.2335863336.

Adding to 12045775 its reverse (57754021), we get a palindrome (69799796).

The spelling of 12045775 in words is "twelve million, forty-five thousand, seven hundred seventy-five".