12516943 has 2 divisors, whose sum is σ = 12516944. Its totient is φ = 12516942.

The previous prime is 12516941. The next prime is 12516949. The reversal of 12516943 is 34961521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12516943 - 2¹ = 12516941 is a prime.

Together with 12516941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12516941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258471 + 6258472.

It is an arithmetic number, because the mean of its divisors is an integer number (6258472).

Almost surely, 2^12516943 is an apocalyptic number.

12516943 is a deficient number, since it is larger than the sum of its proper divisors (1).

12516943 is an equidigital number, since it uses as much as digits as its factorization.

12516943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 12516943 is about 3537.9291965781. The cubic root of 12516943 is about 232.1842509268.

The spelling of 12516943 in words is "twelve million, five hundred sixteen thousand, nine hundred forty-three".