51560435393 has 2 divisors, whose sum is σ = 51560435394. Its totient is φ = 51560435392.

The previous prime is 51560435369. The next prime is 51560435419. The reversal of 51560435393 is 39353406515.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31480695184 + 20079740209 = 177428^2 + 141703^2 .

It is a cyclic number.

It is not a de Polignac number, because 51560435393 - 2⁸ = 51560435137 is a prime.

It is not a weakly prime, because it can be changed into another prime (51560431393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25780217696 + 25780217697.

It is an arithmetic number, because the mean of its divisors is an integer number (25780217697).

Almost surely, 2^51560435393 is an apocalyptic number.

It is an amenable number.

51560435393 is a deficient number, since it is larger than the sum of its proper divisors (1).

51560435393 is an equidigital number, since it uses as much as digits as its factorization.

51560435393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729000, while the sum is 44.

The spelling of 51560435393 in words is "fifty-one billion, five hundred sixty million, four hundred thirty-five thousand, three hundred ninety-three".