53043320 has 64 divisors (see below), whose sum is σ = 134719200. Its totient is φ = 18618880.

The previous prime is 53043271. The next prime is 53043323. The reversal of 53043320 is 2334035.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 53043292 and 53043301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53043323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10682 + ... + 14838.

Almost surely, 2^53043320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53043320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67359600).

53043320 is an abundant number, since it is smaller than the sum of its proper divisors (81675880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53043320 is a wasteful number, since it uses less digits than its factorization.

53043320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208 (or 4204 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 53043320 is about 7283.0845113866. The cubic root of 53043320 is about 375.7308886201.

Adding to 53043320 its reverse (2334035), we get a palindrome (55377355).

The spelling of 53043320 in words is "fifty-three million, forty-three thousand, three hundred twenty".