501223330 has 16 divisors (see below), whose sum is σ = 904793400. Its totient is φ = 199913472.

The previous prime is 501223273. The next prime is 501223339. The reversal of 501223330 is 33322105.

It can be written as a sum of positive squares in 4 ways, for example, as 431517529 + 69705801 = 20773^2 + 8349^2 .

It is a junction number, because it is equal to n+sod(n) for n = 501223298 and 501223307.

It is not an unprimeable number, because it can be changed into a prime (501223339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68319 + ... + 75298.

Almost surely, 2^501223330 is an apocalyptic number.

501223330 is a deficient number, since it is larger than the sum of its proper divisors (403570070).

501223330 is a wasteful number, since it uses less digits than its factorization.

501223330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143973.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 501223330 is about 22388.0175540399. The cubic root of 501223330 is about 794.3473038983.

Adding to 501223330 its reverse (33322105), we get a palindrome (534545435).

The spelling of 501223330 in words is "five hundred one million, two hundred twenty-three thousand, three hundred thirty".