11232521 has 2 divisors, whose sum is σ = 11232522. Its totient is φ = 11232520.

The previous prime is 11232517. The next prime is 11232523. The reversal of 11232521 is 12523211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9241600 + 1990921 = 3040^2 + 1411^2 .

It is a cyclic number.

It is not a de Polignac number, because 11232521 - 2² = 11232517 is a prime.

Together with 11232523, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11232521.

It is not a weakly prime, because it can be changed into another prime (11232523) 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 as a sum of consecutive naturals, namely, 5616260 + 5616261.

It is an arithmetic number, because the mean of its divisors is an integer number (5616261).

Almost surely, 2^11232521 is an apocalyptic number.

It is an amenable number.

11232521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11232521 is an equidigital number, since it uses as much as digits as its factorization.

11232521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 17.

The square root of 11232521 is about 3351.4953379052. The cubic root of 11232521 is about 223.9541320306.

Adding to 11232521 its reverse (12523211), we get a palindrome (23755732).

The spelling of 11232521 in words is "eleven million, two hundred thirty-two thousand, five hundred twenty-one".