215163 has 16 divisors (see below), whose sum is σ = 343840. Its totient is φ = 132192.

The previous prime is 215161. The next prime is 215179. The reversal of 215163 is 361512.

It is not a de Polignac number, because 215163 - 2¹ = 215161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215161) 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, 45 + ... + 657.

It is an arithmetic number, because the mean of its divisors is an integer number (21490).

2²¹⁵¹⁶³ is an apocalyptic number.

215163 is a deficient number, since it is larger than the sum of its proper divisors (128677).

215163 is a wasteful number, since it uses less digits than its factorization.

215163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 629 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 215163 is about 463.8566588937. The cubic root of 215163 is about 59.9223996798.

Adding to 215163 its reverse (361512), we get a palindrome (576675).

It can be divided in two parts, 215 and 163, that added together give a triangular number (378 = T₂₇).

The spelling of 215163 in words is "two hundred fifteen thousand, one hundred sixty-three".