503380165 has 8 divisors (see below), whose sum is σ = 618789528. Its totient is φ = 392881920.

The previous prime is 503380147. The next prime is 503380169. The reversal of 503380165 is 561083305.

It can be written as a sum of positive squares in 4 ways, for example, as 62758084 + 440622081 = 7922^2 + 20991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-503380165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503380169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227552 + ... + 1227961.

It is an arithmetic number, because the mean of its divisors is an integer number (77348691).

Almost surely, 2^503380165 is an apocalyptic number.

It is an amenable number.

503380165 is a deficient number, since it is larger than the sum of its proper divisors (115409363).

503380165 is a wasteful number, since it uses less digits than its factorization.

503380165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455559.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 503380165 is about 22436.1352509740. The cubic root of 503380165 is about 795.4850697956.

The spelling of 503380165 in words is "five hundred three million, three hundred eighty thousand, one hundred sixty-five".