135517271 has 4 divisors (see below), whose sum is σ = 135541512. Its totient is φ = 135493032.

The previous prime is 135517267. The next prime is 135517279. The reversal of 135517271 is 172715531.

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

It is a cyclic number.

It is not a de Polignac number, because 135517271 - 2² = 135517267 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 (135517279) 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 in 3 ways as a sum of consecutive naturals, for example, 1001 + ... + 16493.

It is an arithmetic number, because the mean of its divisors is an integer number (33885378).

Almost surely, 2^135517271 is an apocalyptic number.

135517271 is a deficient number, since it is larger than the sum of its proper divisors (24241).

135517271 is an equidigital number, since it uses as much as digits as its factorization.

135517271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24240.

The product of its digits is 7350, while the sum is 32.

The square root of 135517271 is about 11641.1885561570. The cubic root of 135517271 is about 513.6471496664.

The spelling of 135517271 in words is "one hundred thirty-five million, five hundred seventeen thousand, two hundred seventy-one".