503342173 has 2 divisors, whose sum is σ = 503342174. Its totient is φ = 503342172.

The previous prime is 503342159. The next prime is 503342221. The reversal of 503342173 is 371243305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342509049 + 160833124 = 18507^2 + 12682^2 .

It is a cyclic number.

It is not a de Polignac number, because 503342173 - 2⁵ = 503342141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503342153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251671086 + 251671087.

It is an arithmetic number, because the mean of its divisors is an integer number (251671087).

Almost surely, 2^503342173 is an apocalyptic number.

It is an amenable number.

503342173 is a deficient number, since it is larger than the sum of its proper divisors (1).

503342173 is an equidigital number, since it uses as much as digits as its factorization.

503342173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 503342173 is about 22435.2885651154. The cubic root of 503342173 is about 795.4650565391.

Adding to 503342173 its reverse (371243305), we get a palindrome (874585478).

The spelling of 503342173 in words is "five hundred three million, three hundred forty-two thousand, one hundred seventy-three".