51020403103 has 2 divisors, whose sum is σ = 51020403104. Its totient is φ = 51020403102.

The previous prime is 51020403101. The next prime is 51020403113. The reversal of 51020403103 is 30130402015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51020403103 - 2¹ = 51020403101 is a prime.

It is a super-2 number, since 2×51020403103² (a number of 22 digits) contains 22 as substring.

Together with 51020403101, 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 (51020403101) 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, 25510201551 + 25510201552.

It is an arithmetic number, because the mean of its divisors is an integer number (25510201552).

Almost surely, 2^51020403103 is an apocalyptic number.

51020403103 is a deficient number, since it is larger than the sum of its proper divisors (1).

51020403103 is an equidigital number, since it uses as much as digits as its factorization.

51020403103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 51020403103 its reverse (30130402015), we get a palindrome (81150805118).

The spelling of 51020403103 in words is "fifty-one billion, twenty million, four hundred three thousand, one hundred three".