135518 has 4 divisors (see below), whose sum is σ = 203280. Its totient is φ = 67758.

The previous prime is 135511. The next prime is 135533. The reversal of 135518 is 815531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 815531 = 41 ⋅19891.

It is a junction number, because it is equal to n+sod(n) for n = 135493 and 135502.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 135518.

It is not an unprimeable number, because it can be changed into a prime (135511) by changing a digit.

135518 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33878 + ... + 33881.

It is an arithmetic number, because the mean of its divisors is an integer number (50820).

2¹³⁵⁵¹⁸ is an apocalyptic number.

135518 is a deficient number, since it is larger than the sum of its proper divisors (67762).

135518 is an equidigital number, since it uses as much as digits as its factorization.

135518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67761.

The product of its digits is 600, while the sum is 23.

The square root of 135518 is about 368.1276952363. The cubic root of 135518 is about 51.3648070700.

The spelling of 135518 in words is "one hundred thirty-five thousand, five hundred eighteen".