135215515 has 8 divisors (see below), whose sum is σ = 162340128. Its totient is φ = 108118080.

The previous prime is 135215497. The next prime is 135215519. The reversal of 135215515 is 515512531.

135215515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135215515 - 2¹¹ = 135213467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135215519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6535 + ... + 17695.

It is an arithmetic number, because the mean of its divisors is an integer number (20292516).

Almost surely, 2^135215515 is an apocalyptic number.

135215515 is a deficient number, since it is larger than the sum of its proper divisors (27124613).

135215515 is a wasteful number, since it uses less digits than its factorization.

135215515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13589.

The product of its digits is 3750, while the sum is 28.

The square root of 135215515 is about 11628.2206291418. The cubic root of 135215515 is about 513.2656206951.

The spelling of 135215515 in words is "one hundred thirty-five million, two hundred fifteen thousand, five hundred fifteen".