51503230451 has 2 divisors, whose sum is σ = 51503230452. Its totient is φ = 51503230450.

The previous prime is 51503230421. The next prime is 51503230453. The reversal of 51503230451 is 15403230515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51503230451 - 2¹⁴ = 51503214067 is a prime.

Together with 51503230453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51503230453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25751615225 + 25751615226.

It is an arithmetic number, because the mean of its divisors is an integer number (25751615226).

Almost surely, 2^51503230451 is an apocalyptic number.

51503230451 is a deficient number, since it is larger than the sum of its proper divisors (1).

51503230451 is an equidigital number, since it uses as much as digits as its factorization.

51503230451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 51503230451 its reverse (15403230515), we get a palindrome (66906460966).

The spelling of 51503230451 in words is "fifty-one billion, five hundred three million, two hundred thirty thousand, four hundred fifty-one".