2175081173 has 2 divisors, whose sum is σ = 2175081174. Its totient is φ = 2175081172.

The previous prime is 2175081143. The next prime is 2175081193. The reversal of 2175081173 is 3711805712.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1313482564 + 861598609 = 36242^2 + 29353^2 .

It is a cyclic number.

It is not a de Polignac number, because 2175081173 - 2¹⁸ = 2174819029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2175081143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1087540586 + 1087540587.

It is an arithmetic number, because the mean of its divisors is an integer number (1087540587).

Almost surely, 2^2175081173 is an apocalyptic number.

It is an amenable number.

2175081173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2175081173 is an equidigital number, since it uses as much as digits as its factorization.

2175081173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 2175081173 is about 46637.7655232323. The cubic root of 2175081173 is about 1295.6623025050.

Adding to 2175081173 its reverse (3711805712), we get a palindrome (5886886885).

The spelling of 2175081173 in words is "two billion, one hundred seventy-five million, eighty-one thousand, one hundred seventy-three".