215338255 has 24 divisors (see below), whose sum is σ = 290114496. Its totient is φ = 153257280.

The previous prime is 215338237. The next prime is 215338297. The reversal of 215338255 is 552833512.

It is not a de Polignac number, because 215338255 - 2⁵ = 215338223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215338255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24649 + ... + 32221.

It is an arithmetic number, because the mean of its divisors is an integer number (12088104).

Almost surely, 2^215338255 is an apocalyptic number.

215338255 is a deficient number, since it is larger than the sum of its proper divisors (74776241).

215338255 is a wasteful number, since it uses less digits than its factorization.

215338255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7647 (or 7636 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 215338255 is about 14674.4081652379. The cubic root of 215338255 is about 599.3866463573.

The spelling of 215338255 in words is "two hundred fifteen million, three hundred thirty-eight thousand, two hundred fifty-five".