11528213 has 2 divisors, whose sum is σ = 11528214. Its totient is φ = 11528212.

The previous prime is 11528203. The next prime is 11528263. The reversal of 11528213 is 31282511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9284209 + 2244004 = 3047^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 11528213 - 2⁴ = 11528197 is a prime.

It is a Chen prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11528203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5764106 + 5764107.

It is an arithmetic number, because the mean of its divisors is an integer number (5764107).

Almost surely, 2^11528213 is an apocalyptic number.

It is an amenable number.

11528213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11528213 is an equidigital number, since it uses as much as digits as its factorization.

11528213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 23.

The square root of 11528213 is about 3395.3222232949. The cubic root of 11528213 is about 225.9023059102.

The spelling of 11528213 in words is "eleven million, five hundred twenty-eight thousand, two hundred thirteen".