51544430380601 has 2 divisors, whose sum is σ = 51544430380602. Its totient is φ = 51544430380600.

The previous prime is 51544430380571. The next prime is 51544430380627. The reversal of 51544430380601 is 10608303444515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50312408079376 + 1232022301225 = 7093124^2 + 1109965^2 .

It is a cyclic number.

It is not a de Polignac number, because 51544430380601 - 2³⁰ = 51543356638777 is a prime.

It is not a weakly prime, because it can be changed into another prime (51544430380631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25772215190300 + 25772215190301.

It is an arithmetic number, because the mean of its divisors is an integer number (25772215190301).

Almost surely, 2^{51544430380601} is an apocalyptic number.

It is an amenable number.

51544430380601 is a deficient number, since it is larger than the sum of its proper divisors (1).

51544430380601 is an equidigital number, since it uses as much as digits as its factorization.

51544430380601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 51544430380601 in words is "fifty-one trillion, five hundred forty-four billion, four hundred thirty million, three hundred eighty thousand, six hundred one".