53223500 has 48 divisors (see below), whose sum is σ = 126820512. Its totient is φ = 19352000.

The previous prime is 53223473. The next prime is 53223509. The reversal of 53223500 is 532235.

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

It is not an unprimeable number, because it can be changed into a prime (53223509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 662 + ... + 10338.

It is an arithmetic number, because the mean of its divisors is an integer number (2642094).

Almost surely, 2^53223500 is an apocalyptic number.

53223500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53223500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63410256).

53223500 is an abundant number, since it is smaller than the sum of its proper divisors (73597012).

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

53223500 is a wasteful number, since it uses less digits than its factorization.

53223500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9707 (or 9695 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 53223500 is about 7295.4437836228. The cubic root of 53223500 is about 376.1558411637.

Adding to 53223500 its reverse (532235), we get a palindrome (53755735).

Multiplying 53223500 by its reverse (532235), we get a square (28327409522500 = 5322350²).

53223500 divided by its reverse (532235) gives a square (100 = 10²).

The spelling of 53223500 in words is "fifty-three million, two hundred twenty-three thousand, five hundred".