13117571 has 2 divisors, whose sum is σ = 13117572. Its totient is φ = 13117570.

The previous prime is 13117561. The next prime is 13117579. The reversal of 13117571 is 17571131.

It is a strong prime.

It is an emirp because it is prime and its reverse (17571131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13117571 - 2²² = 8923267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13117571.

It is not a weakly prime, because it can be changed into another prime (13117579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6558785 + 6558786.

It is an arithmetic number, because the mean of its divisors is an integer number (6558786).

Almost surely, 2^13117571 is an apocalyptic number.

13117571 is a deficient number, since it is larger than the sum of its proper divisors (1).

13117571 is an equidigital number, since it uses as much as digits as its factorization.

13117571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 735, while the sum is 26.

The square root of 13117571 is about 3621.8187420135. The cubic root of 13117571 is about 235.8401855387.

The spelling of 13117571 in words is "thirteen million, one hundred seventeen thousand, five hundred seventy-one".