11526521 has 4 divisors (see below), whose sum is σ = 12133200. Its totient is φ = 10919844.

The previous prime is 11526517. The next prime is 11526533. The reversal of 11526521 is 12562511.

It is a happy number.

11526521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 12562511 = 13 ⋅966347.

It is a cyclic number.

It is not a de Polignac number, because 11526521 - 2² = 11526517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11526551) 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, 303311 + ... + 303348.

It is an arithmetic number, because the mean of its divisors is an integer number (3033300).

Almost surely, 2^11526521 is an apocalyptic number.

It is an amenable number.

11526521 is a deficient number, since it is larger than the sum of its proper divisors (606679).

11526521 is an equidigital number, since it uses as much as digits as its factorization.

11526521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606678.

The product of its digits is 600, while the sum is 23.

The square root of 11526521 is about 3395.0730478150. The cubic root of 11526521 is about 225.8912534484.

The spelling of 11526521 in words is "eleven million, five hundred twenty-six thousand, five hundred twenty-one".