51550733651 has 2 divisors, whose sum is σ = 51550733652. Its totient is φ = 51550733650.

The previous prime is 51550733579. The next prime is 51550733657. The reversal of 51550733651 is 15633705515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51550733651 - 2¹⁰ = 51550732627 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 51550733599 and 51550733608.

It is not a weakly prime, because it can be changed into another prime (51550733657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25775366825 + 25775366826.

It is an arithmetic number, because the mean of its divisors is an integer number (25775366826).

Almost surely, 2^51550733651 is an apocalyptic number.

51550733651 is a deficient number, since it is larger than the sum of its proper divisors (1).

51550733651 is an equidigital number, since it uses as much as digits as its factorization.

51550733651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236250, while the sum is 41.

The spelling of 51550733651 in words is "fifty-one billion, five hundred fifty million, seven hundred thirty-three thousand, six hundred fifty-one".