51380750051 has 2 divisors, whose sum is σ = 51380750052. Its totient is φ = 51380750050.

The previous prime is 51380750011. The next prime is 51380750191. The reversal of 51380750051 is 15005708315.

51380750051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51380750051 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 51380749993 and 51380750020.

It is not a weakly prime, because it can be changed into another prime (51380750011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25690375025 + 25690375026.

It is an arithmetic number, because the mean of its divisors is an integer number (25690375026).

Almost surely, 2^51380750051 is an apocalyptic number.

51380750051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51380750051 is an equidigital number, since it uses as much as digits as its factorization.

51380750051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 51380750051 in words is "fifty-one billion, three hundred eighty million, seven hundred fifty thousand, fifty-one".