11282521 has 4 divisors (see below), whose sum is σ = 11587492. Its totient is φ = 10977552.

The previous prime is 11282519. The next prime is 11282527. The reversal of 11282521 is 12528211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4579600 + 6702921 = 2140^2 + 2589^2 .

It is a cyclic number.

It is not a de Polignac number, because 11282521 - 2¹ = 11282519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11282492 and 11282501.

It is not an unprimeable number, because it can be changed into a prime (11282527) 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, 152430 + ... + 152503.

It is an arithmetic number, because the mean of its divisors is an integer number (2896873).

Almost surely, 2^11282521 is an apocalyptic number.

It is an amenable number.

11282521 is a deficient number, since it is larger than the sum of its proper divisors (304971).

11282521 is an equidigital number, since it uses as much as digits as its factorization.

11282521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304970.

The product of its digits is 320, while the sum is 22.

The square root of 11282521 is about 3358.9464121953. The cubic root of 11282521 is about 224.2859403741.

The spelling of 11282521 in words is "eleven million, two hundred eighty-two thousand, five hundred twenty-one".