135515000 has 40 divisors (see below), whose sum is σ = 317523360. Its totient is φ = 54204000.

The previous prime is 135514991. The next prime is 135515047. The reversal of 135515000 is 515531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8552 + ... + 18551.

It is an arithmetic number, because the mean of its divisors is an integer number (7938084).

Almost surely, 2^135515000 is an apocalyptic number.

135515000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135515000 is an abundant number, since it is smaller than the sum of its proper divisors (182008360).

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

135515000 is an equidigital number, since it uses as much as digits as its factorization.

135515000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27129 (or 27110 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 135515000 is about 11641.0910141619. The cubic root of 135515000 is about 513.6442804154.

The spelling of 135515000 in words is "one hundred thirty-five million, five hundred fifteen thousand".