2172172052 has 6 divisors (see below), whose sum is σ = 3801301098. Its totient is φ = 1086086024.

The previous prime is 2172172033. The next prime is 2172172073. The reversal of 2172172052 is 2502712712.

It can be written as a sum of positive squares in only one way, i.e., 1924927876 + 247244176 = 43874^2 + 15724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271521503 + ... + 271521510.

It is an arithmetic number, because the mean of its divisors is an integer number (633550183).

Almost surely, 2^2172172052 is an apocalyptic number.

It is an amenable number.

2172172052 is a deficient number, since it is larger than the sum of its proper divisors (1629129046).

2172172052 is a wasteful number, since it uses less digits than its factorization.

2172172052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543043017 (or 543043015 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 2172172052 is about 46606.5666188789. The cubic root of 2172172052 is about 1295.0844052855.

Adding to 2172172052 its reverse (2502712712), we get a palindrome (4674884764).

The spelling of 2172172052 in words is "two billion, one hundred seventy-two million, one hundred seventy-two thousand, fifty-two".