135099552 has 96 divisors (see below), whose sum is σ = 408748032. Its totient is φ = 38271744.

The previous prime is 135099541. The next prime is 135099553. The reversal of 135099552 is 255990531.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 135099552.

It is not an unprimeable number, because it can be changed into a prime (135099553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84553 + ... + 86135.

It is an arithmetic number, because the mean of its divisors is an integer number (4257792).

Almost surely, 2^135099552 is an apocalyptic number.

135099552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135099552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204374016).

135099552 is an abundant number, since it is smaller than the sum of its proper divisors (273648480).

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

135099552 is a wasteful number, since it uses less digits than its factorization.

135099552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1722 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 39.

The square root of 135099552 is about 11623.2332851062. The cubic root of 135099552 is about 513.1188504463.

The spelling of 135099552 in words is "one hundred thirty-five million, ninety-nine thousand, five hundred fifty-two".