135520560 has 160 divisors (see below), whose sum is σ = 533537280. Its totient is φ = 30972672.

The previous prime is 135520519. The next prime is 135520571. The reversal of 135520560 is 65025531.

135520560 is a `hidden beast` number, since 135 + 520 + 5 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10639 + ... + 19601.

It is an arithmetic number, because the mean of its divisors is an integer number (3334608).

Almost surely, 2^135520560 is an apocalyptic number.

135520560 is a gapful number since it is divisible by the number (10) 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 135520560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266768640).

135520560 is an abundant number, since it is smaller than the sum of its proper divisors (398016720).

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

135520560 is a wasteful number, since it uses less digits than its factorization.

135520560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8992 (or 8980 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 135520560 is about 11641.3298209440. The cubic root of 135520560 is about 513.6513050329.

The spelling of 135520560 in words is "one hundred thirty-five million, five hundred twenty thousand, five hundred sixty".