12543524 has 12 divisors (see below), whose sum is σ = 25087104. Its totient is φ = 5375784.

The previous prime is 12543523. The next prime is 12543529. The reversal of 12543524 is 42534521.

It is a happy number.

12543524 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12543493 and 12543502.

It is not an unprimeable number, because it can be changed into a prime (12543521) 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 in 3 ways as a sum of consecutive naturals, for example, 223964 + ... + 224019.

It is an arithmetic number, because the mean of its divisors is an integer number (2090592).

Almost surely, 2^12543524 is an apocalyptic number.

12543524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12543524 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12543524 is a wasteful number, since it uses less digits than its factorization.

12543524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447994 (or 447992 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 12543524 is about 3541.6837803508. The cubic root of 12543524 is about 232.3484903364.

The spelling of 12543524 in words is "twelve million, five hundred forty-three thousand, five hundred twenty-four".