12115445 has 16 divisors (see below), whose sum is σ = 15522240. Its totient is φ = 9051264.

The previous prime is 12115421. The next prime is 12115463. The reversal of 12115445 is 54451121.

It is a cyclic number.

It is not a de Polignac number, because 12115445 - 2¹² = 12111349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12115445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6062 + ... + 7808.

It is an arithmetic number, because the mean of its divisors is an integer number (970140).

Almost surely, 2^12115445 is an apocalyptic number.

It is an amenable number.

12115445 is a deficient number, since it is larger than the sum of its proper divisors (3406795).

12115445 is a wasteful number, since it uses less digits than its factorization.

12115445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844.

The product of its digits is 800, while the sum is 23.

The square root of 12115445 is about 3480.7247808467. The cubic root of 12115445 is about 229.6746818552.

Adding to 12115445 its reverse (54451121), we get a palindrome (66566566).

The spelling of 12115445 in words is "twelve million, one hundred fifteen thousand, four hundred forty-five".