135961530 has 32 divisors (see below), whose sum is σ = 343483200. Its totient is φ = 34348032.

The previous prime is 135961523. The next prime is 135961577. The reversal of 135961530 is 35169531.

135961530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 135961491 and 135961500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118695 + ... + 119834.

It is an arithmetic number, because the mean of its divisors is an integer number (10733850).

Almost surely, 2^135961530 is an apocalyptic number.

135961530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135961530 is an abundant number, since it is smaller than the sum of its proper divisors (207521670).

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

135961530 is a wasteful number, since it uses less digits than its factorization.

135961530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238558.

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 135961530 is about 11660.2542853919. The cubic root of 135961530 is about 514.2078247341.

The spelling of 135961530 in words is "one hundred thirty-five million, nine hundred sixty-one thousand, five hundred thirty".