2172500163 has 8 divisors (see below), whose sum is σ = 3218518800. Its totient is φ = 1448333424.

The previous prime is 2172500153. The next prime is 2172500179. The reversal of 2172500163 is 3610052712.

It is a happy number.

2172500163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2172500163 - 2⁸ = 2172499907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 80462969 = 2172500163 / (2 + 1 + 7 + 2 + 5 + 0 + 0 + 1 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (2172500123) 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, 40231458 + ... + 40231511.

It is an arithmetic number, because the mean of its divisors is an integer number (402314850).

Almost surely, 2^2172500163 is an apocalyptic number.

2172500163 is a deficient number, since it is larger than the sum of its proper divisors (1046018637).

2172500163 is an equidigital number, since it uses as much as digits as its factorization.

2172500163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80462978 (or 80462972 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2172500163 is about 46610.0864942343. The cubic root of 2172500163 is about 1295.1496103790.

Adding to 2172500163 its reverse (3610052712), we get a palindrome (5782552875).

The spelling of 2172500163 in words is "two billion, one hundred seventy-two million, five hundred thousand, one hundred sixty-three".