13170851 has 2 divisors, whose sum is σ = 13170852. Its totient is φ = 13170850.

The previous prime is 13170823. The next prime is 13170907. The reversal of 13170851 is 15807131.

13170851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (15807131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13170851 - 2²² = 8976547 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 13170851.

It is not a weakly prime, because it can be changed into another prime (13170811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6585425 + 6585426.

It is an arithmetic number, because the mean of its divisors is an integer number (6585426).

Almost surely, 2^13170851 is an apocalyptic number.

13170851 is a deficient number, since it is larger than the sum of its proper divisors (1).

13170851 is an equidigital number, since it uses as much as digits as its factorization.

13170851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 13170851 is about 3629.1667087639. The cubic root of 13170851 is about 236.1590603959.

Adding to 13170851 its reverse (15807131), we get a palindrome (28977982).

The spelling of 13170851 in words is "thirteen million, one hundred seventy thousand, eight hundred fifty-one".