12516534 has 24 divisors (see below), whose sum is σ = 27195480. Its totient is φ = 4160448.

The previous prime is 12516481. The next prime is 12516563. The reversal of 12516534 is 43561521.

12516534 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 653 + 4 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12516498 and 12516507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7662 + ... + 9150.

It is an arithmetic number, because the mean of its divisors is an integer number (1133145).

Almost surely, 2^12516534 is an apocalyptic number.

12516534 is an abundant number, since it is smaller than the sum of its proper divisors (14678946).

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

12516534 is a wasteful number, since it uses less digits than its factorization.

12516534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964 (or 1961 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 12516534 is about 3537.8713939317. The cubic root of 12516534 is about 232.1817219709.

The spelling of 12516534 in words is "twelve million, five hundred sixteen thousand, five hundred thirty-four".