13081559 has 2 divisors, whose sum is σ = 13081560. Its totient is φ = 13081558.

The previous prime is 13081507. The next prime is 13081573. The reversal of 13081559 is 95518031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13081559 - 2²⁰ = 12032983 is a prime.

It is a super-2 number, since 2×13081559² = 342254371740962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13081259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6540779 + 6540780.

It is an arithmetic number, because the mean of its divisors is an integer number (6540780).

Almost surely, 2^13081559 is an apocalyptic number.

13081559 is a deficient number, since it is larger than the sum of its proper divisors (1).

13081559 is an equidigital number, since it uses as much as digits as its factorization.

13081559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 13081559 is about 3616.8437898256. The cubic root of 13081559 is about 235.6241683934.

The spelling of 13081559 in words is "thirteen million, eighty-one thousand, five hundred fifty-nine".