135659550 has 96 divisors (see below), whose sum is σ = 367663968. Its totient is φ = 32901120.

The previous prime is 135659533. The next prime is 135659561. The reversal of 135659550 is 55956531.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 135659499 and 135659508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 141874 + ... + 142826.

It is an arithmetic number, because the mean of its divisors is an integer number (3829833).

Almost surely, 2^135659550 is an apocalyptic number.

135659550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 135659550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183831984).

135659550 is an abundant number, since it is smaller than the sum of its proper divisors (232004418).

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

135659550 is a wasteful number, since it uses less digits than its factorization.

135659550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 101250, while the sum is 39.

The square root of 135659550 is about 11647.2979699156. The cubic root of 135659550 is about 513.8268454382.

It can be divided in two parts, 1356 and 59550, that added together give a palindrome (60906).

The spelling of 135659550 in words is "one hundred thirty-five million, six hundred fifty-nine thousand, five hundred fifty".