11133505 has 4 divisors (see below), whose sum is σ = 13360212. Its totient is φ = 8906800.

The previous prime is 11133481. The next prime is 11133539. The reversal of 11133505 is 50533111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7420176 + 3713329 = 2724^2 + 1927^2 .

It is not a de Polignac number, because 11133505 - 2⁷ = 11133377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113346 + ... + 1113355.

It is an arithmetic number, because the mean of its divisors is an integer number (3340053).

Almost surely, 2^11133505 is an apocalyptic number.

It is an amenable number.

11133505 is a deficient number, since it is larger than the sum of its proper divisors (2226707).

11133505 is an equidigital number, since it uses as much as digits as its factorization.

11133505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226706.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 11133505 is about 3336.6907258540. The cubic root of 11133505 is about 223.2941281643.

Adding to 11133505 its reverse (50533111), we get a palindrome (61666616).

The spelling of 11133505 in words is "eleven million, one hundred thirty-three thousand, five hundred five".