135517859 has 2 divisors, whose sum is σ = 135517860. Its totient is φ = 135517858.

The previous prime is 135517843. The next prime is 135517883. The reversal of 135517859 is 958715531.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (958715531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135517859 - 2⁴ = 135517843 is a prime.

It is not a weakly prime, because it can be changed into another prime (135519859) 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, 67758929 + 67758930.

It is an arithmetic number, because the mean of its divisors is an integer number (67758930).

Almost surely, 2^135517859 is an apocalyptic number.

135517859 is a deficient number, since it is larger than the sum of its proper divisors (1).

135517859 is an equidigital number, since it uses as much as digits as its factorization.

135517859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189000, while the sum is 44.

The square root of 135517859 is about 11641.2138112827. The cubic root of 135517859 is about 513.6478925583.

The spelling of 135517859 in words is "one hundred thirty-five million, five hundred seventeen thousand, eight hundred fifty-nine".