It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-2321530553 is a prime.
It is a Duffinian number.
It is a Curzon number.
Almost surely, 22321530553 is an apocalyptic number.
2321530553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.
It is an amenable number.
2321530553 is a wasteful number, since it uses less digits than its factorization.
2321530553 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7264.
The square root of 2321530553 is about 48182.2638841306. The cubic root of 2321530553 is about 1324.1122432095.
Adding to 2321530553 its reverse (3550351232), we get a palindrome (5871881785).
The spelling of 2321530553 in words is "two billion, three hundred twenty-one million, five hundred thirty thousand, five hundred fifty-three".