163215 has 40 divisors (see below), whose sum is σ = 325248. Its totient is φ = 77760.

The previous prime is 163211. The next prime is 163223. The reversal of 163215 is 512361.

It is a Cunningham number, because it is equal to 404²-1.

It is not a de Polignac number, because 163215 - 2² = 163211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5250 + ... + 5280.

2¹⁶³²¹⁵ is an apocalyptic number.

163215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163215 is a deficient number, since it is larger than the sum of its proper divisors (162033).

163215 is a wasteful number, since it uses less digits than its factorization.

163215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 52 counting only the distinct ones).

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

The square root of 163215 is about 403.9987623743. The cubic root of 163215 is about 54.6495625319.

Adding to 163215 its reverse (512361), we get a palindrome (675576).

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

The spelling of 163215 in words is "one hundred sixty-three thousand, two hundred fifteen".