2163051217 has 8 divisors (see below), whose sum is σ = 2240217000. Its totient is φ = 2086057344.

The previous prime is 2163051203. The next prime is 2163051221. The reversal of 2163051217 is 7121503612.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 651474576 + 1511576641 = 25524^2 + 38879^2 .

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 2163051217 - 2⁷ = 2163051089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2163051617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17092 + ... + 67957.

It is an arithmetic number, because the mean of its divisors is an integer number (280027125).

Almost surely, 2^2163051217 is an apocalyptic number.

It is an amenable number.

2163051217 is a deficient number, since it is larger than the sum of its proper divisors (77165783).

2163051217 is an equidigital number, since it uses as much as digits as its factorization.

2163051217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85955.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2163051217 is about 46508.6144386177. The cubic root of 2163051217 is about 1293.2691987289.

Adding to 2163051217 its reverse (7121503612), we get a palindrome (9284554829).

The spelling of 2163051217 in words is "two billion, one hundred sixty-three million, fifty-one thousand, two hundred seventeen".