51031451543 has 2 divisors, whose sum is σ = 51031451544. Its totient is φ = 51031451542.

The previous prime is 51031451441. The next prime is 51031451551. The reversal of 51031451543 is 34515413015.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51031451543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51031451593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25515725771 + 25515725772.

It is an arithmetic number, because the mean of its divisors is an integer number (25515725772).

Almost surely, 2^51031451543 is an apocalyptic number.

51031451543 is a deficient number, since it is larger than the sum of its proper divisors (1).

51031451543 is an equidigital number, since it uses as much as digits as its factorization.

51031451543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 51031451543 its reverse (34515413015), we get a palindrome (85546864558).

The spelling of 51031451543 in words is "fifty-one billion, thirty-one million, four hundred fifty-one thousand, five hundred forty-three".