422056505557 has 2 divisors, whose sum is σ = 422056505558. Its totient is φ = 422056505556.

The previous prime is 422056505509. The next prime is 422056505569. The reversal of 422056505557 is 755505650224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333391914801 + 88664590756 = 577401^2 + 297766^2 .

It is a cyclic number.

It is not a de Polignac number, because 422056505557 - 2¹¹ = 422056503509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422056505957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211028252778 + 211028252779.

It is an arithmetic number, because the mean of its divisors is an integer number (211028252779).

Almost surely, 2^422056505557 is an apocalyptic number.

It is an amenable number.

422056505557 is a deficient number, since it is larger than the sum of its proper divisors (1).

422056505557 is an equidigital number, since it uses as much as digits as its factorization.

422056505557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100000, while the sum is 46.

The spelling of 422056505557 in words is "four hundred twenty-two billion, fifty-six million, five hundred five thousand, five hundred fifty-seven".