215242295 has 4 divisors (see below), whose sum is σ = 258290760. Its totient is φ = 172193832.

The previous prime is 215242273. The next prime is 215242319. The reversal of 215242295 is 592242512.

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 215242295 - 2⁶ = 215242231 is a prime.

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, 21524225 + ... + 21524234.

It is an arithmetic number, because the mean of its divisors is an integer number (64572690).

Almost surely, 2^215242295 is an apocalyptic number.

215242295 is a deficient number, since it is larger than the sum of its proper divisors (43048465).

215242295 is an equidigital number, since it uses as much as digits as its factorization.

215242295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43048464.

The product of its digits is 14400, while the sum is 32.

The square root of 215242295 is about 14671.1381630738. The cubic root of 215242295 is about 599.2975993394.

The spelling of 215242295 in words is "two hundred fifteen million, two hundred forty-two thousand, two hundred ninety-five".