12521526 has 16 divisors (see below), whose sum is σ = 25227504. Its totient is φ = 4143104.

The previous prime is 12521519. The next prime is 12521543. The reversal of 12521526 is 62512521.

It is a happy number.

12521526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12521526² = 313577226737352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12521496 and 12521505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6795 + ... + 8438.

It is an arithmetic number, because the mean of its divisors is an integer number (1576719).

Almost surely, 2^12521526 is an apocalyptic number.

12521526 is an abundant number, since it is smaller than the sum of its proper divisors (12705978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12521526 is a wasteful number, since it uses less digits than its factorization.

12521526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15375.

The product of its digits is 1200, while the sum is 24.

The square root of 12521526 is about 3538.5768325698. The cubic root of 12521526 is about 232.2125850703.

The spelling of 12521526 in words is "twelve million, five hundred twenty-one thousand, five hundred twenty-six".