12917571 has 8 divisors (see below), whose sum is σ = 17240064. Its totient is φ = 8603400.

The previous prime is 12917563. The next prime is 12917573. The reversal of 12917571 is 17571921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12917571 - 2³ = 12917563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12917573) 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 7 ways as a sum of consecutive naturals, for example, 4750 + ... + 6956.

It is an arithmetic number, because the mean of its divisors is an integer number (2155008).

Almost surely, 2^12917571 is an apocalyptic number.

12917571 is a deficient number, since it is larger than the sum of its proper divisors (4322493).

12917571 is a wasteful number, since it uses less digits than its factorization.

12917571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4161.

The product of its digits is 4410, while the sum is 33.

The square root of 12917571 is about 3594.1022523017. The cubic root of 12917571 is about 234.6354450202.

The spelling of 12917571 in words is "twelve million, nine hundred seventeen thousand, five hundred seventy-one".