51503230351 has 2 divisors, whose sum is σ = 51503230352. Its totient is φ = 51503230350.

The previous prime is 51503230333. The next prime is 51503230393. The reversal of 51503230351 is 15303230515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51503230351 - 2²¹ = 51501133199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51503230451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25751615175 + 25751615176.

It is an arithmetic number, because the mean of its divisors is an integer number (25751615176).

Almost surely, 2^51503230351 is an apocalyptic number.

51503230351 is a deficient number, since it is larger than the sum of its proper divisors (1).

51503230351 is an equidigital number, since it uses as much as digits as its factorization.

51503230351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 28.

Adding to 51503230351 its reverse (15303230515), we get a palindrome (66806460866).

The spelling of 51503230351 in words is "fifty-one billion, five hundred three million, two hundred thirty thousand, three hundred fifty-one".