215160215 has 4 divisors (see below), whose sum is σ = 258192264. Its totient is φ = 172128168.

The previous prime is 215160173. The next prime is 215160229. The reversal of 215160215 is 512061512.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215160215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21516017 + ... + 21516026.

It is an arithmetic number, because the mean of its divisors is an integer number (64548066).

Almost surely, 2^215160215 is an apocalyptic number.

215160215 is a deficient number, since it is larger than the sum of its proper divisors (43032049).

215160215 is an equidigital number, since it uses as much as digits as its factorization.

215160215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43032048.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 215160215 is about 14668.3405673580. The cubic root of 215160215 is about 599.2214113996.

The spelling of 215160215 in words is "two hundred fifteen million, one hundred sixty thousand, two hundred fifteen".