11505045 has 16 divisors (see below), whose sum is σ = 18631872. Its totient is φ = 6061440.

The previous prime is 11505017. The next prime is 11505049. The reversal of 11505045 is 54050511.

It is not a de Polignac number, because 11505045 - 2⁶ = 11504981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11505049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3376 + ... + 5865.

It is an arithmetic number, because the mean of its divisors is an integer number (1164492).

Almost surely, 2^11505045 is an apocalyptic number.

11505045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11505045 is a deficient number, since it is larger than the sum of its proper divisors (7126827).

11505045 is an equidigital number, since it uses as much as digits as its factorization.

11505045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9332.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 11505045 is about 3391.9087546690. The cubic root of 11505045 is about 225.7508740978.

Adding to 11505045 its reverse (54050511), we get a palindrome (65555556).

The spelling of 11505045 in words is "eleven million, five hundred five thousand, forty-five".