2163215 has 8 divisors (see below), whose sum is σ = 2611440. Its totient is φ = 1720192.

The previous prime is 2163193. The next prime is 2163221. The reversal of 2163215 is 5123612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2163215 - 2⁸ = 2162959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (326430).

2^2163215 is an apocalyptic number.

2163215 is a deficient number, since it is larger than the sum of its proper divisors (448225).

2163215 is a wasteful number, since it uses less digits than its factorization.

2163215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601.

The product of its digits is 360, while the sum is 20.

The square root of 2163215 is about 1470.7872041869. The cubic root of 2163215 is about 129.3301839374.

Adding to 2163215 its reverse (5123612), we get a palindrome (7286827).

It can be divided in two parts, 21 and 63215, that added together give a palindrome (63236).

The spelling of 2163215 in words is "two million, one hundred sixty-three thousand, two hundred fifteen".