135822215 has 4 divisors (see below), whose sum is σ = 162986664. Its totient is φ = 108657768.

The previous prime is 135822161. The next prime is 135822221. The reversal of 135822215 is 512228531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135822215 - 2¹⁸ = 135560071 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13582217 + ... + 13582226.

It is an arithmetic number, because the mean of its divisors is an integer number (40746666).

Almost surely, 2^135822215 is an apocalyptic number.

135822215 is a deficient number, since it is larger than the sum of its proper divisors (27164449).

135822215 is an equidigital number, since it uses as much as digits as its factorization.

135822215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27164448.

The product of its digits is 4800, while the sum is 29.

The square root of 135822215 is about 11654.2788279670. The cubic root of 135822215 is about 514.0321344856.

The spelling of 135822215 in words is "one hundred thirty-five million, eight hundred twenty-two thousand, two hundred fifteen".