215150215 has 32 divisors (see below), whose sum is σ = 313528320. Its totient is φ = 138361344.

The previous prime is 215150213. The next prime is 215150263. The reversal of 215150215 is 512051512.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 215150215 - 2¹ = 215150213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215150213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248874 + ... + 249736.

It is an arithmetic number, because the mean of its divisors is an integer number (9797760).

Almost surely, 2^215150215 is an apocalyptic number.

215150215 is a deficient number, since it is larger than the sum of its proper divisors (98378105).

215150215 is a wasteful number, since it uses less digits than its factorization.

215150215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 215150215 is about 14667.9996932097. Note that the first 3 decimals coincide. The cubic root of 215150215 is about 599.2121279192.

The spelling of 215150215 in words is "two hundred fifteen million, one hundred fifty thousand, two hundred fifteen".