13417561 has 2 divisors, whose sum is σ = 13417562. Its totient is φ = 13417560.

The previous prime is 13417543. The next prime is 13417571. The reversal of 13417561 is 16571431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10017225 + 3400336 = 3165^2 + 1844^2 .

It is a cyclic number.

It is not a de Polignac number, because 13417561 - 2⁵ = 13417529 is a prime.

It is not a weakly prime, because it can be changed into another prime (13417511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6708780 + 6708781.

It is an arithmetic number, because the mean of its divisors is an integer number (6708781).

Almost surely, 2^13417561 is an apocalyptic number.

It is an amenable number.

13417561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13417561 is an equidigital number, since it uses as much as digits as its factorization.

13417561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 13417561 is about 3662.9989079987. The cubic root of 13417561 is about 237.6244872770.

Adding to 13417561 its reverse (16571431), we get a palindrome (29988992).

The spelling of 13417561 in words is "thirteen million, four hundred seventeen thousand, five hundred sixty-one".