135275520 has 88 divisors (see below), whose sum is σ = 432719424. Its totient is φ = 36069376.

The previous prime is 135275513. The next prime is 135275533. The reversal of 135275520 is 25572531.

It is a super-2 number, since 2×135275520² = 36598932622540800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10957 + ... + 19763.

Almost surely, 2^135275520 is an apocalyptic number.

135275520 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 135275520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216359712).

135275520 is an abundant number, since it is smaller than the sum of its proper divisors (297443904).

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

135275520 is an equidigital number, since it uses as much as digits as its factorization.

135275520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8835 (or 8817 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 135275520 is about 11630.8004883585. The cubic root of 135275520 is about 513.3415339482.

The spelling of 135275520 in words is "one hundred thirty-five million, two hundred seventy-five thousand, five hundred twenty".