11633521 has 4 divisors (see below), whose sum is σ = 11904112. Its totient is φ = 11362932.

The previous prime is 11633513. The next prime is 11633527. The reversal of 11633521 is 12533611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11633521 - 2³ = 11633513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11633492 and 11633501.

It is not an unprimeable number, because it can be changed into a prime (11633527) 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 3 ways as a sum of consecutive naturals, for example, 135231 + ... + 135316.

It is an arithmetic number, because the mean of its divisors is an integer number (2976028).

Almost surely, 2^11633521 is an apocalyptic number.

It is an amenable number.

11633521 is a deficient number, since it is larger than the sum of its proper divisors (270591).

11633521 is an equidigital number, since it uses as much as digits as its factorization.

11633521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270590.

The product of its digits is 540, while the sum is 22.

The square root of 11633521 is about 3410.7947754153. The cubic root of 11633521 is about 226.5880799750.

The spelling of 11633521 in words is "eleven million, six hundred thirty-three thousand, five hundred twenty-one".