11533289 has 4 divisors (see below), whose sum is σ = 11679360. Its totient is φ = 11387220.

The previous prime is 11533273. The next prime is 11533297. The reversal of 11533289 is 98233511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98233511 = 2287 ⋅42953.

It is a cyclic number.

It is not a de Polignac number, because 11533289 - 2⁴ = 11533273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11533889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72917 + ... + 73074.

It is an arithmetic number, because the mean of its divisors is an integer number (2919840).

Almost surely, 2^11533289 is an apocalyptic number.

It is an amenable number.

11533289 is a deficient number, since it is larger than the sum of its proper divisors (146071).

11533289 is an equidigital number, since it uses as much as digits as its factorization.

11533289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146070.

The product of its digits is 6480, while the sum is 32.

The square root of 11533289 is about 3396.0696400398. The cubic root of 11533289 is about 225.9354568084.

The spelling of 11533289 in words is "eleven million, five hundred thirty-three thousand, two hundred eighty-nine".