53172224 has 48 divisors (see below), whose sum is σ = 121539600. Its totient is φ = 22781952.

The previous prime is 53172193. The next prime is 53172239. The reversal of 53172224 is 42227135.

It is a junction number, because it is equal to n+sod(n) for n = 53172193 and 53172202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12482 + ... + 16190.

It is an arithmetic number, because the mean of its divisors is an integer number (2532075).

Almost surely, 2^53172224 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 53172224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60769800).

53172224 is an abundant number, since it is smaller than the sum of its proper divisors (68367376).

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

53172224 is an equidigital number, since it uses as much as digits as its factorization.

53172224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738 (or 3718 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 53172224 is about 7291.9286886255. The cubic root of 53172224 is about 376.0350050404.

Adding to 53172224 its reverse (42227135), we get a palindrome (95399359).

The spelling of 53172224 in words is "fifty-three million, one hundred seventy-two thousand, two hundred twenty-four".