12506056 has 8 divisors (see below), whose sum is σ = 23448870. Its totient is φ = 6253024.

The previous prime is 12506041. The next prime is 12506057. The reversal of 12506056 is 65060521.

It can be written as a sum of positive squares in only one way, i.e., 12489156 + 16900 = 3534^2 + 130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12506056.

It is not an unprimeable number, because it can be changed into a prime (12506057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781621 + ... + 781636.

Almost surely, 2^12506056 is an apocalyptic number.

It is an amenable number.

12506056 is a deficient number, since it is larger than the sum of its proper divisors (10942814).

12506056 is a wasteful number, since it uses less digits than its factorization.

12506056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563263 (or 1563259 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 12506056 is about 3536.3902499583. The cubic root of 12506056 is about 232.1169149122.

Adding to 12506056 its reverse (65060521), we get a palindrome (77566577).

The spelling of 12506056 in words is "twelve million, five hundred six thousand, fifty-six".