51500344541 has 2 divisors, whose sum is σ = 51500344542. Its totient is φ = 51500344540.

The previous prime is 51500344537. The next prime is 51500344589. The reversal of 51500344541 is 14544300515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50512562500 + 987782041 = 224750^2 + 31429^2 .

It is a cyclic number.

It is not a de Polignac number, because 51500344541 - 2² = 51500344537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51500344498 and 51500344507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51500347541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25750172270 + 25750172271.

It is an arithmetic number, because the mean of its divisors is an integer number (25750172271).

Almost surely, 2^51500344541 is an apocalyptic number.

It is an amenable number.

51500344541 is a deficient number, since it is larger than the sum of its proper divisors (1).

51500344541 is an equidigital number, since it uses as much as digits as its factorization.

51500344541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 51500344541 in words is "fifty-one billion, five hundred million, three hundred forty-four thousand, five hundred forty-one".