135560520 has 128 divisors (see below), whose sum is σ = 466560000. Its totient is φ = 34974720.

The previous prime is 135560519. The next prime is 135560543. The reversal of 135560520 is 25065531.

135560520 is a `hidden beast` number, since 1 + 3 + 55 + 605 + 2 + 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31456 + ... + 35504.

It is an arithmetic number, because the mean of its divisors is an integer number (3645000).

Almost surely, 2^135560520 is an apocalyptic number.

135560520 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 135560520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233280000).

135560520 is an abundant number, since it is smaller than the sum of its proper divisors (330999480).

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

135560520 is a wasteful number, since it uses less digits than its factorization.

135560520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100 (or 4090 counting only the distinct ones).

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

The square root of 135560520 is about 11643.0459932099. The cubic root of 135560520 is about 513.7017856613.

The spelling of 135560520 in words is "one hundred thirty-five million, five hundred sixty thousand, five hundred twenty".