2173508153 has 6 divisors (see below), whose sum is σ = 2251042014. Its totient is φ = 2098558784.

The previous prime is 2173508149. The next prime is 2173508171. The reversal of 2173508153 is 3518053712.

It can be written as a sum of positive squares in 3 ways, for example, as 222695929 + 1950812224 = 14923^2 + 44168^2 .

It is not a de Polignac number, because 2173508153 - 2² = 2173508149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173508653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1291376 + ... + 1293057.

It is an arithmetic number, because the mean of its divisors is an integer number (375173669).

Almost surely, 2^2173508153 is an apocalyptic number.

It is an amenable number.

2173508153 is a deficient number, since it is larger than the sum of its proper divisors (77533861).

2173508153 is an equidigital number, since it uses as much as digits as its factorization.

2173508153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584491 (or 2584462 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 2173508153 is about 46620.8982431699. The cubic root of 2173508153 is about 1295.3498859299.

The spelling of 2173508153 in words is "two billion, one hundred seventy-three million, five hundred eight thousand, one hundred fifty-three".