506391103 has 2 divisors, whose sum is σ = 506391104. Its totient is φ = 506391102.

The previous prime is 506391101. The next prime is 506391131. The reversal of 506391103 is 301193605.

It is an a-pointer prime, because the next prime (506391131) can be obtained adding 506391103 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506391103 - 2¹ = 506391101 is a prime.

Together with 506391101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506391101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253195551 + 253195552.

It is an arithmetic number, because the mean of its divisors is an integer number (253195552).

Almost surely, 2^506391103 is an apocalyptic number.

506391103 is a deficient number, since it is larger than the sum of its proper divisors (1).

506391103 is an equidigital number, since it uses as much as digits as its factorization.

506391103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 506391103 is about 22503.1354037610. The cubic root of 506391103 is about 797.0679665824.

The spelling of 506391103 in words is "five hundred six million, three hundred ninety-one thousand, one hundred three".