11133521 has 8 divisors (see below), whose sum is σ = 13472640. Its totient is φ = 8981568.

The previous prime is 11133481. The next prime is 11133539. The reversal of 11133521 is 12533111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11133521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11133521.

It is not an unprimeable number, because it can be changed into a prime (11130521) 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 7 ways as a sum of consecutive naturals, for example, 46661 + ... + 46898.

It is an arithmetic number, because the mean of its divisors is an integer number (1684080).

Almost surely, 2^11133521 is an apocalyptic number.

It is an amenable number.

11133521 is a deficient number, since it is larger than the sum of its proper divisors (2339119).

11133521 is an equidigital number, since it uses as much as digits as its factorization.

11133521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93583.

The product of its digits is 90, while the sum is 17.

The square root of 11133521 is about 3336.6931234382. The cubic root of 11133521 is about 223.2942351298.

Adding to 11133521 its reverse (12533111), we get a palindrome (23666632).

The spelling of 11133521 in words is "eleven million, one hundred thirty-three thousand, five hundred twenty-one".