503415397 has 2 divisors, whose sum is σ = 503415398. Its totient is φ = 503415396.

The previous prime is 503415391. The next prime is 503415433. The reversal of 503415397 is 793514305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338780836 + 164634561 = 18406^2 + 12831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503415397 is a prime.

It is a super-3 number, since 3×503415397³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503415391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251707698 + 251707699.

It is an arithmetic number, because the mean of its divisors is an integer number (251707699).

Almost surely, 2^503415397 is an apocalyptic number.

It is an amenable number.

503415397 is a deficient number, since it is larger than the sum of its proper divisors (1).

503415397 is an equidigital number, since it uses as much as digits as its factorization.

503415397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 503415397 is about 22436.9203991992. The cubic root of 503415397 is about 795.5036282518.

The spelling of 503415397 in words is "five hundred three million, four hundred fifteen thousand, three hundred ninety-seven".