2172046273 has 2 divisors, whose sum is σ = 2172046274. Its totient is φ = 2172046272.

The previous prime is 2172046243. The next prime is 2172046291. The reversal of 2172046273 is 3726402712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1919140864 + 252905409 = 43808^2 + 15903^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172046273 - 2⁵ = 2172046241 is a prime.

It is not a weakly prime, because it can be changed into another prime (2172046223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086023136 + 1086023137.

It is an arithmetic number, because the mean of its divisors is an integer number (1086023137).

Almost surely, 2^2172046273 is an apocalyptic number.

It is an amenable number.

2172046273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172046273 is an equidigital number, since it uses as much as digits as its factorization.

2172046273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 2172046273 is about 46605.2172294047. The cubic root of 2172046273 is about 1295.0594076392.

Adding to 2172046273 its reverse (3726402712), we get a palindrome (5898448985).

The spelling of 2172046273 in words is "two billion, one hundred seventy-two million, forty-six thousand, two hundred seventy-three".