135533215 has 4 divisors (see below), whose sum is σ = 162639864. Its totient is φ = 108426568.

The previous prime is 135533191. The next prime is 135533263. The reversal of 135533215 is 512335531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512335531 = 89 ⋅5756579.

It is a cyclic number.

It is not a de Polignac number, because 135533215 - 2⁷ = 135533087 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 13553317 + ... + 13553326.

It is an arithmetic number, because the mean of its divisors is an integer number (40659966).

Almost surely, 2^135533215 is an apocalyptic number.

135533215 is a deficient number, since it is larger than the sum of its proper divisors (27106649).

135533215 is an equidigital number, since it uses as much as digits as its factorization.

135533215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27106648.

The product of its digits is 6750, while the sum is 28.

The square root of 135533215 is about 11641.8733458151. The cubic root of 135533215 is about 513.6672929021.

Adding to 135533215 its reverse (512335531), we get a palindrome (647868746).

The spelling of 135533215 in words is "one hundred thirty-five million, five hundred thirty-three thousand, two hundred fifteen".