12917541 has 16 divisors (see below), whose sum is σ = 21198464. Its totient is φ = 6813504.

The previous prime is 12917507. The next prime is 12917563. The reversal of 12917541 is 14571921.

It is not a de Polignac number, because 12917541 - 2⁹ = 12917029 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12917499 and 12917508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23386 + ... + 23931.

It is an arithmetic number, because the mean of its divisors is an integer number (1324904).

Almost surely, 2^12917541 is an apocalyptic number.

It is an amenable number.

12917541 is a deficient number, since it is larger than the sum of its proper divisors (8280923).

12917541 is a wasteful number, since it uses less digits than its factorization.

12917541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47340.

The product of its digits is 2520, while the sum is 30.

The square root of 12917541 is about 3594.0980787953. The cubic root of 12917541 is about 234.6352633795.

The spelling of 12917541 in words is "twelve million, nine hundred seventeen thousand, five hundred forty-one".