12445445 has 8 divisors (see below), whose sum is σ = 15813144. Its totient is φ = 9370624.

The previous prime is 12445441. The next prime is 12445469. The reversal of 12445445 is 54454421.

It can be written as a sum of positive squares in 4 ways, for example, as 4866436 + 7579009 = 2206^2 + 2753^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12445445 - 2² = 12445441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73124 + ... + 73293.

It is an arithmetic number, because the mean of its divisors is an integer number (1976643).

Almost surely, 2^12445445 is an apocalyptic number.

It is an amenable number.

12445445 is a deficient number, since it is larger than the sum of its proper divisors (3367699).

12445445 is a wasteful number, since it uses less digits than its factorization.

12445445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146439.

The product of its digits is 12800, while the sum is 29.

The square root of 12445445 is about 3527.8102273223. The cubic root of 12445445 is about 231.7413201315.

Adding to 12445445 its reverse (54454421), we get a palindrome (66899866).

The spelling of 12445445 in words is "twelve million, four hundred forty-five thousand, four hundred forty-five".