135522 has 12 divisors (see below), whose sum is σ = 293670. Its totient is φ = 45168.

The previous prime is 135511. The next prime is 135533. The reversal of 135522 is 225531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (135511) and next prime (135533).

It can be written as a sum of positive squares in only one way, i.e., 123201 + 12321 = 351^2 + 111^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7529 = 135522 / (1 + 3 + 5 + 5 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 135495 and 135504.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 135522.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3747 + ... + 3782.

2¹³⁵⁵²² is an apocalyptic number.

135522 is an abundant number, since it is smaller than the sum of its proper divisors (158148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135522 is a wasteful number, since it uses less digits than its factorization.

135522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7537 (or 7534 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 135522 is about 368.1331280936. The cubic root of 135522 is about 51.3653124327.

Subtracting 135522 from its reverse (225531), we obtain a palindrome (90009).

The spelling of 135522 in words is "one hundred thirty-five thousand, five hundred twenty-two".