2173975775 has 6 divisors (see below), whose sum is σ = 2695729992. Its totient is φ = 1739180600.

The previous prime is 2173975751. The next prime is 2173975777. The reversal of 2173975775 is 5775793712.

2173975775 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 2173975775 - 2¹⁴ = 2173959391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173975777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43479491 + ... + 43479540.

It is an arithmetic number, because the mean of its divisors is an integer number (449288332).

Almost surely, 2^2173975775 is an apocalyptic number.

2173975775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2173975775 is a deficient number, since it is larger than the sum of its proper divisors (521754217).

2173975775 is an equidigital number, since it uses as much as digits as its factorization.

2173975775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86959041 (or 86959036 counting only the distinct ones).

The product of its digits is 3241350, while the sum is 53.

The square root of 2173975775 is about 46625.9131277876. The cubic root of 2173975775 is about 1295.4427757999.

The spelling of 2173975775 in words is "two billion, one hundred seventy-three million, nine hundred seventy-five thousand, seven hundred seventy-five".