503250421013 has 2 divisors, whose sum is σ = 503250421014. Its totient is φ = 503250421012.

The previous prime is 503250420979. The next prime is 503250421043. The reversal of 503250421013 is 310124052305.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433289113009 + 69961308004 = 658247^2 + 264502^2 .

It is a cyclic number.

It is not a de Polignac number, because 503250421013 - 2¹⁸ = 503250158869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503250421043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251625210506 + 251625210507.

It is an arithmetic number, because the mean of its divisors is an integer number (251625210507).

Almost surely, 2^503250421013 is an apocalyptic number.

It is an amenable number.

503250421013 is a deficient number, since it is larger than the sum of its proper divisors (1).

503250421013 is an equidigital number, since it uses as much as digits as its factorization.

503250421013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 503250421013 its reverse (310124052305), we get a palindrome (813374473318).

The spelling of 503250421013 in words is "five hundred three billion, two hundred fifty million, four hundred twenty-one thousand, thirteen".