13165541 has 2 divisors, whose sum is σ = 13165542. Its totient is φ = 13165540.

The previous prime is 13165513. The next prime is 13165561. The reversal of 13165541 is 14556131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10176100 + 2989441 = 3190^2 + 1729^2 .

It is a cyclic number.

It is not a de Polignac number, because 13165541 - 2¹⁰ = 13164517 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 13165541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13165501) 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, 6582770 + 6582771.

It is an arithmetic number, because the mean of its divisors is an integer number (6582771).

Almost surely, 2^13165541 is an apocalyptic number.

It is an amenable number.

13165541 is a deficient number, since it is larger than the sum of its proper divisors (1).

13165541 is an equidigital number, since it uses as much as digits as its factorization.

13165541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 26.

The square root of 13165541 is about 3628.4350621170. The cubic root of 13165541 is about 236.1273192636.

The spelling of 13165541 in words is "thirteen million, one hundred sixty-five thousand, five hundred forty-one".