12971577 has 8 divisors (see below), whose sum is σ = 17663616. Its totient is φ = 8463632.

The previous prime is 12971573. The next prime is 12971597. The reversal of 12971577 is 77517921.

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

It is a cyclic number.

It is not a de Polignac number, because 12971577 - 2² = 12971573 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12971573) 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, 45858 + ... + 46139.

It is an arithmetic number, because the mean of its divisors is an integer number (2207952).

Almost surely, 2^12971577 is an apocalyptic number.

It is an amenable number.

12971577 is a deficient number, since it is larger than the sum of its proper divisors (4692039).

12971577 is an equidigital number, since it uses as much as digits as its factorization.

12971577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92047.

The product of its digits is 30870, while the sum is 39.

The square root of 12971577 is about 3601.6075577442. The cubic root of 12971577 is about 234.9619796647.

The spelling of 12971577 in words is "twelve million, nine hundred seventy-one thousand, five hundred seventy-seven".