Adding to 53215232 its reverse (23251235), we get a palindrome (76466467).
It is an unprimeable number.
Almost surely, 253215232 is an apocalyptic number.
53215232 is a droll number since its even prime factors and its odd prime factors have the same sum.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 53215232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62914440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
53215232 is an frugal number, since it uses more digits than its factorization.
53215232 is an odious number, because the sum of its binary digits is odd.
The square root of 53215232 is about 7294.8771065728. The cubic root of 53215232 is about 376.1363621895.
The spelling of 53215232 in words is "fifty-three million, two hundred fifteen thousand, two hundred thirty-two".