503378717 has 2 divisors, whose sum is σ = 503378718. Its totient is φ = 503378716.

The previous prime is 503378699. The next prime is 503378731. The reversal of 503378717 is 717873305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 453732601 + 49646116 = 21301^2 + 7046^2 .

It is a cyclic number.

It is not a de Polignac number, because 503378717 - 2⁸ = 503378461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503378767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251689358 + 251689359.

It is an arithmetic number, because the mean of its divisors is an integer number (251689359).

Almost surely, 2^503378717 is an apocalyptic number.

It is an amenable number.

503378717 is a deficient number, since it is larger than the sum of its proper divisors (1).

503378717 is an equidigital number, since it uses as much as digits as its factorization.

503378717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 503378717 is about 22436.1029815786. The cubic root of 503378717 is about 795.4843070431.

The spelling of 503378717 in words is "five hundred three million, three hundred seventy-eight thousand, seven hundred seventeen".