13277791 has 2 divisors, whose sum is σ = 13277792. Its totient is φ = 13277790.

The previous prime is 13277753. The next prime is 13277801. The reversal of 13277791 is 19777231.

It is a strong prime.

It is an emirp because it is prime and its reverse (19777231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13277791 - 2²¹ = 11180639 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13277791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13277711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6638895 + 6638896.

It is an arithmetic number, because the mean of its divisors is an integer number (6638896).

Almost surely, 2^13277791 is an apocalyptic number.

13277791 is a deficient number, since it is larger than the sum of its proper divisors (1).

13277791 is an equidigital number, since it uses as much as digits as its factorization.

13277791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 37.

The square root of 13277791 is about 3643.8703324899. The cubic root of 13277791 is about 236.7964984474.

The spelling of 13277791 in words is "thirteen million, two hundred seventy-seven thousand, seven hundred ninety-one".