11232509 has 4 divisors (see below), whose sum is σ = 11594880. Its totient is φ = 10870140.

The previous prime is 11232499. The next prime is 11232517. The reversal of 11232509 is 90523211.

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: 90523211 = 673 ⋅134507.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11232509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11232409) 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, 181139 + ... + 181200.

It is an arithmetic number, because the mean of its divisors is an integer number (2898720).

Almost surely, 2^11232509 is an apocalyptic number.

It is an amenable number.

11232509 is a deficient number, since it is larger than the sum of its proper divisors (362371).

11232509 is an equidigital number, since it uses as much as digits as its factorization.

11232509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362370.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 11232509 is about 3351.4935476590. The cubic root of 11232509 is about 223.9540522785.

The spelling of 11232509 in words is "eleven million, two hundred thirty-two thousand, five hundred nine".