135517871 has 4 divisors (see below), whose sum is σ = 135555744. Its totient is φ = 135480000.

The previous prime is 135517859. The next prime is 135517883. The reversal of 135517871 is 178715531.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (135517859) and next prime (135517883).

It is a cyclic number.

It is not a de Polignac number, because 135517871 - 2⁶ = 135517807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135517471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12935 + ... + 20936.

It is an arithmetic number, because the mean of its divisors is an integer number (33888936).

Almost surely, 2^135517871 is an apocalyptic number.

135517871 is a deficient number, since it is larger than the sum of its proper divisors (37873).

135517871 is an equidigital number, since it uses as much as digits as its factorization.

135517871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37872.

The product of its digits is 29400, while the sum is 38.

The square root of 135517871 is about 11641.2143266929. The cubic root of 135517871 is about 513.6479077194.

The spelling of 135517871 in words is "one hundred thirty-five million, five hundred seventeen thousand, eight hundred seventy-one".