503173073 has 4 divisors (see below), whose sum is σ = 541878708. Its totient is φ = 464467440.

The previous prime is 503173051. The next prime is 503173091. The reversal of 503173073 is 370371305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102252544 + 400920529 = 10112^2 + 20023^2 .

It is a cyclic number.

It is not a de Polignac number, because 503173073 - 2²⁸ = 234737617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (503173003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19352798 + ... + 19352823.

It is an arithmetic number, because the mean of its divisors is an integer number (135469677).

Almost surely, 2^503173073 is an apocalyptic number.

It is an amenable number.

503173073 is a deficient number, since it is larger than the sum of its proper divisors (38705635).

503173073 is a wasteful number, since it uses less digits than its factorization.

503173073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38705634.

The product of its (nonzero) digits is 6615, while the sum is 29.

The square root of 503173073 is about 22431.5196319821. The cubic root of 503173073 is about 795.3759665757.

The spelling of 503173073 in words is "five hundred three million, one hundred seventy-three thousand, seventy-three".