505500355525553 has 2 divisors, whose sum is σ = 505500355525554. Its totient is φ = 505500355525552.

The previous prime is 505500355525549. The next prime is 505500355525591. The reversal of 505500355525553 is 355525553005505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476213999339584 + 29286356185969 = 21822328^2 + 5411687^2 .

It is a cyclic number.

It is not a de Polignac number, because 505500355525553 - 2² = 505500355525549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505500355525495 and 505500355525504.

It is not a weakly prime, because it can be changed into another prime (505500355525153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252750177762776 + 252750177762777.

It is an arithmetic number, because the mean of its divisors is an integer number (252750177762777).

Almost surely, 2^{505500355525553} is an apocalyptic number.

It is an amenable number.

505500355525553 is a deficient number, since it is larger than the sum of its proper divisors (1).

505500355525553 is an equidigital number, since it uses as much as digits as its factorization.

505500355525553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35156250, while the sum is 53.

The spelling of 505500355525553 in words is "five hundred five trillion, five hundred billion, three hundred fifty-five million, five hundred twenty-five thousand, five hundred fifty-three".