215105165 has 16 divisors (see below), whose sum is σ = 298157760. Its totient is φ = 147237120.

The previous prime is 215105153. The next prime is 215105167. The reversal of 215105165 is 561501512.

It is not a de Polignac number, because 215105165 - 2⁶ = 215105101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215105167) 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, 114095 + ... + 115964.

It is an arithmetic number, because the mean of its divisors is an integer number (18634860).

Almost surely, 2^215105165 is an apocalyptic number.

It is an amenable number.

215105165 is a deficient number, since it is larger than the sum of its proper divisors (83052595).

215105165 is a wasteful number, since it uses less digits than its factorization.

215105165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230092.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 215105165 is about 14666.4639569325. The cubic root of 215105165 is about 599.1703022724.

Adding to 215105165 its reverse (561501512), we get a palindrome (776606677).

The spelling of 215105165 in words is "two hundred fifteen million, one hundred five thousand, one hundred sixty-five".