135526 has 4 divisors (see below), whose sum is σ = 203292. Its totient is φ = 67762.

The previous prime is 135511. The next prime is 135533. The reversal of 135526 is 625531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 625531 = 23 ⋅27197.

It is a d-powerful number, because it can be written as 1 + 3³ + 5 + 5⁵ + 2¹⁷ + 6⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 135497 and 135506.

It is a congruent number.

It is an unprimeable number.

135526 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33880 + ... + 33883.

It is an arithmetic number, because the mean of its divisors is an integer number (50823).

2¹³⁵⁵²⁶ is an apocalyptic number.

135526 is a deficient number, since it is larger than the sum of its proper divisors (67766).

135526 is an equidigital number, since it uses as much as digits as its factorization.

135526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67765.

The product of its digits is 900, while the sum is 22.

The square root of 135526 is about 368.1385608708. The cubic root of 135526 is about 51.3658177854.

The spelling of 135526 in words is "one hundred thirty-five thousand, five hundred twenty-six".