503397997 has 2 divisors, whose sum is σ = 503397998. Its totient is φ = 503397996.

The previous prime is 503397991. The next prime is 503398009. The reversal of 503397997 is 799793305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474978436 + 28419561 = 21794^2 + 5331^2 .

It is a cyclic number.

It is not a de Polignac number, because 503397997 - 2²⁷ = 369180269 is a prime.

It is a super-2 number, since 2×503397997² = 506819086767224018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503397991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251698998 + 251698999.

It is an arithmetic number, because the mean of its divisors is an integer number (251698999).

Almost surely, 2^503397997 is an apocalyptic number.

It is an amenable number.

503397997 is a deficient number, since it is larger than the sum of its proper divisors (1).

503397997 is an equidigital number, since it uses as much as digits as its factorization.

503397997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1607445, while the sum is 52.

The square root of 503397997 is about 22436.5326420996. The cubic root of 503397997 is about 795.4944629099.

The spelling of 503397997 in words is "five hundred three million, three hundred ninety-seven thousand, nine hundred ninety-seven".