135252526 has 16 divisors (see below), whose sum is σ = 213845760. Its totient is φ = 63980280.

The previous prime is 135252521. The next prime is 135252529. The reversal of 135252526 is 625252531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135252521) 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 7 ways as a sum of consecutive naturals, for example, 32665 + ... + 36571.

It is an arithmetic number, because the mean of its divisors is an integer number (13365360).

Almost surely, 2^135252526 is an apocalyptic number.

135252526 is a deficient number, since it is larger than the sum of its proper divisors (78593234).

135252526 is a wasteful number, since it uses less digits than its factorization.

135252526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4839.

The product of its digits is 18000, while the sum is 31.

The square root of 135252526 is about 11629.8119503283. The cubic root of 135252526 is about 513.3124465368.

The spelling of 135252526 in words is "one hundred thirty-five million, two hundred fifty-two thousand, five hundred twenty-six".