2173523441 has 4 divisors (see below), whose sum is σ = 2173782000. Its totient is φ = 2173264884.

The previous prime is 2173523399. The next prime is 2173523453. The reversal of 2173523441 is 1443253712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2173523441 - 2⁶ = 2173523377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2173523398 and 2173523407.

It is not an unprimeable number, because it can be changed into a prime (2173522441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116231 + ... + 133628.

It is an arithmetic number, because the mean of its divisors is an integer number (543445500).

Almost surely, 2^2173523441 is an apocalyptic number.

It is an amenable number.

2173523441 is a deficient number, since it is larger than the sum of its proper divisors (258559).

2173523441 is an equidigital number, since it uses as much as digits as its factorization.

2173523441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258558.

The product of its digits is 20160, while the sum is 32.

The square root of 2173523441 is about 46621.0622036864. The cubic root of 2173523441 is about 1295.3529229958.

The spelling of 2173523441 in words is "two billion, one hundred seventy-three million, five hundred twenty-three thousand, four hundred forty-one".