215250215 has 16 divisors (see below), whose sum is σ = 270530496. Its totient is φ = 164102400.

The previous prime is 215250187. The next prime is 215250227. The reversal of 215250215 is 512052512.

It is not a de Polignac number, because 215250215 - 2²⁰ = 214201639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 15 ways as a sum of consecutive naturals, for example, 28985 + ... + 35645.

It is an arithmetic number, because the mean of its divisors is an integer number (16908156).

Almost surely, 2^215250215 is an apocalyptic number.

215250215 is a deficient number, since it is larger than the sum of its proper divisors (55280281).

215250215 is a wasteful number, since it uses less digits than its factorization.

215250215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6970.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 215250215 is about 14671.4080782998. The cubic root of 215250215 is about 599.3049497825.

The spelling of 215250215 in words is "two hundred fifteen million, two hundred fifty thousand, two hundred fifteen".