12503061 has 6 divisors (see below), whose sum is σ = 18059990. Its totient is φ = 8335368.

The previous prime is 12503059. The next prime is 12503131. The reversal of 12503061 is 16030521.

12503061 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 2954961 = 3090^2 + 1719^2 .

It is not a de Polignac number, because 12503061 - 2¹ = 12503059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12503011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694606 + ... + 694623.

Almost surely, 2^12503061 is an apocalyptic number.

It is an amenable number.

12503061 is a deficient number, since it is larger than the sum of its proper divisors (5556929).

12503061 is a wasteful number, since it uses less digits than its factorization.

12503061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389235 (or 1389232 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 12503061 is about 3535.9667702059. The cubic root of 12503061 is about 232.0983840058.

Adding to 12503061 its reverse (16030521), we get a palindrome (28533582).

The spelling of 12503061 in words is "twelve million, five hundred three thousand, sixty-one".