12557671 has 6 divisors (see below), whose sum is σ = 14607960. Its totient is φ = 10763676.

The previous prime is 12557659. The next prime is 12557693. The reversal of 12557671 is 17675521.

It is a happy number.

It is not a de Polignac number, because 12557671 - 2¹³ = 12549479 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 (12557641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128091 + ... + 128188.

It is an arithmetic number, because the mean of its divisors is an integer number (2434660).

Almost surely, 2^12557671 is an apocalyptic number.

12557671 is a deficient number, since it is larger than the sum of its proper divisors (2050289).

12557671 is an equidigital number, since it uses as much as digits as its factorization.

12557671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256293 (or 256286 counting only the distinct ones).

The product of its digits is 14700, while the sum is 34.

The square root of 12557671 is about 3543.6804314159. The cubic root of 12557671 is about 232.4358076146.

The spelling of 12557671 in words is "twelve million, five hundred fifty-seven thousand, six hundred seventy-one".