501312224 has 48 divisors (see below), whose sum is σ = 1144821888. Its totient is φ = 211635072.

The previous prime is 501312211. The next prime is 501312247. The reversal of 501312224 is 422213105.

It is a junction number, because it is equal to n+sod(n) for n = 501312196 and 501312205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694 + ... + 31709.

It is an arithmetic number, because the mean of its divisors is an integer number (23850456).

Almost surely, 2^501312224 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 501312224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572410944).

501312224 is an abundant number, since it is smaller than the sum of its proper divisors (643509664).

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

501312224 is a wasteful number, since it uses less digits than its factorization.

501312224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33487 (or 33479 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 501312224 is about 22390.0027690932. The cubic root of 501312224 is about 794.3942613661.

Adding to 501312224 its reverse (422213105), we get a palindrome (923525329).

The spelling of 501312224 in words is "five hundred one million, three hundred twelve thousand, two hundred twenty-four".