501222224 has 10 divisors (see below), whose sum is σ = 971118090. Its totient is φ = 250611104.

The previous prime is 501222193. The next prime is 501222259. The reversal of 501222224 is 422222105.

It can be written as a sum of positive squares in only one way, i.e., 485761600 + 15460624 = 22040^2 + 3932^2 .

It is a junction number, because it is equal to n+sod(n) for n = 501222196 and 501222205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15663179 + ... + 15663210.

It is an arithmetic number, because the mean of its divisors is an integer number (97111809).

Almost surely, 2^501222224 is an apocalyptic number.

It is an amenable number.

501222224 is a deficient number, since it is larger than the sum of its proper divisors (469895866).

501222224 is a wasteful number, since it uses less digits than its factorization.

501222224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31326397 (or 31326391 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 501222224 is about 22387.9928533131. The cubic root of 501222224 is about 794.3467196286.

Adding to 501222224 its reverse (422222105), we get a palindrome (923444329).

The spelling of 501222224 in words is "five hundred one million, two hundred twenty-two thousand, two hundred twenty-four".