11805045 has 16 divisors (see below), whose sum is σ = 21586560. Its totient is φ = 5396544.

The previous prime is 11805019. The next prime is 11805047. The reversal of 11805045 is 54050811.

It is not a de Polignac number, because 11805045 - 2⁷ = 11804917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11805047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56110 + ... + 56319.

It is an arithmetic number, because the mean of its divisors is an integer number (1349160).

Almost surely, 2^11805045 is an apocalyptic number.

11805045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11805045 is a deficient number, since it is larger than the sum of its proper divisors (9781515).

11805045 is a wasteful number, since it uses less digits than its factorization.

11805045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112444.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 11805045 is about 3435.8470571316. The cubic root of 11805045 is about 227.6962521822.

Adding to 11805045 its reverse (54050811), we get a palindrome (65855856).

The spelling of 11805045 in words is "eleven million, eight hundred five thousand, forty-five".