12516166 has 16 divisors (see below), whose sum is σ = 20276928. Its totient is φ = 5760000.

The previous prime is 12516137. The next prime is 12516169. The reversal of 12516166 is 66161521.

It is a super-2 number, since 2×12516166² = 313308822679112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12516169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16291 + ... + 17041.

It is an arithmetic number, because the mean of its divisors is an integer number (1267308).

Almost surely, 2^12516166 is an apocalyptic number.

12516166 is a deficient number, since it is larger than the sum of its proper divisors (7760762).

12516166 is a wasteful number, since it uses less digits than its factorization.

12516166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407.

The product of its digits is 2160, while the sum is 28.

The square root of 12516166 is about 3537.8193848754. The cubic root of 12516166 is about 232.1794464817.

Adding to 12516166 its reverse (66161521), we get a palindrome (78677687).

The spelling of 12516166 in words is "twelve million, five hundred sixteen thousand, one hundred sixty-six".