12993571 has 2 divisors, whose sum is σ = 12993572. Its totient is φ = 12993570.

The previous prime is 12993509. The next prime is 12993599. The reversal of 12993571 is 17539921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12993571 - 2⁹ = 12993059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12993571.

It is not a weakly prime, because it can be changed into another prime (12993271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6496785 + 6496786.

It is an arithmetic number, because the mean of its divisors is an integer number (6496786).

Almost surely, 2^12993571 is an apocalyptic number.

12993571 is a deficient number, since it is larger than the sum of its proper divisors (1).

12993571 is an equidigital number, since it uses as much as digits as its factorization.

12993571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 12993571 is about 3604.6596233209. The cubic root of 12993571 is about 235.0947015328.

The spelling of 12993571 in words is "twelve million, nine hundred ninety-three thousand, five hundred seventy-one".