135520163 has 8 divisors (see below), whose sum is σ = 143524608. Its totient is φ = 127691784.

The previous prime is 135520157. The next prime is 135520181. The reversal of 135520163 is 361025531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135520163 - 2²⁰ = 134471587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135520123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42431 + ... + 45512.

It is an arithmetic number, because the mean of its divisors is an integer number (17940576).

Almost surely, 2^135520163 is an apocalyptic number.

135520163 is a deficient number, since it is larger than the sum of its proper divisors (8004445).

135520163 is an equidigital number, since it uses as much as digits as its factorization.

135520163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88033.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 135520163 is about 11641.3127696149. The cubic root of 135520163 is about 513.6508034614.

Adding to 135520163 its reverse (361025531), we get a palindrome (496545694).

The spelling of 135520163 in words is "one hundred thirty-five million, five hundred twenty thousand, one hundred sixty-three".