215465215 has 16 divisors (see below), whose sum is σ = 305686080. Its totient is φ = 142652160.

The previous prime is 215465213. The next prime is 215465231. The reversal of 215465215 is 512564512.

It is not a de Polignac number, because 215465215 - 2¹ = 215465213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215465213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105126 + ... + 107155.

It is an arithmetic number, because the mean of its divisors is an integer number (19105380).

Almost surely, 2^215465215 is an apocalyptic number.

215465215 is a deficient number, since it is larger than the sum of its proper divisors (90220865).

215465215 is a wasteful number, since it uses less digits than its factorization.

215465215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212322.

The product of its digits is 12000, while the sum is 31.

The square root of 215465215 is about 14678.7334262872. The cubic root of 215465215 is about 599.5044194830.

The spelling of 215465215 in words is "two hundred fifteen million, four hundred sixty-five thousand, two hundred fifteen".