503345440 has 48 divisors (see below), whose sum is σ = 1280632248. Its totient is φ = 185849856.

The previous prime is 503345429. The next prime is 503345459. The reversal of 503345440 is 44543305.

It can be written as a sum of positive squares in 4 ways, for example, as 143712144 + 359633296 = 11988^2 + 18964^2 .

It is a junction number, because it is equal to n+sod(n) for n = 503345399 and 503345408.

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, 118917 + ... + 123076.

Almost surely, 2^503345440 is an apocalyptic number.

It is an amenable number.

503345440 is an abundant number, since it is smaller than the sum of its proper divisors (777286808).

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

503345440 is a wasteful number, since it uses less digits than its factorization.

503345440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242021 (or 242013 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 503345440 is about 22435.3613744018. The cubic root of 503345440 is about 795.4667775544.

Adding to 503345440 its reverse (44543305), we get a palindrome (547888745).

The spelling of 503345440 in words is "five hundred three million, three hundred forty-five thousand, four hundred forty".