135500531 has 4 divisors (see below), whose sum is σ = 138805464. Its totient is φ = 132195600.

The previous prime is 135500527. The next prime is 135500537. The reversal of 135500531 is 135005531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135500531 - 2² = 135500527 is a prime.

It is a super-2 number, since 2×135500531² = 36720787802563922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135500497 and 135500506.

It is not an unprimeable number, because it can be changed into a prime (135500537) 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 3 ways as a sum of consecutive naturals, for example, 1652405 + ... + 1652486.

It is an arithmetic number, because the mean of its divisors is an integer number (34701366).

Almost surely, 2^135500531 is an apocalyptic number.

135500531 is a deficient number, since it is larger than the sum of its proper divisors (3304933).

135500531 is an equidigital number, since it uses as much as digits as its factorization.

135500531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304932.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 135500531 is about 11640.4695352035. The cubic root of 135500531 is about 513.6259990846.

The spelling of 135500531 in words is "one hundred thirty-five million, five hundred thousand, five hundred thirty-one".