505555404422 has 16 divisors (see below), whose sum is σ = 762316809072. Its totient is φ = 251449989120.

The previous prime is 505555404407. The next prime is 505555404433. The reversal of 505555404422 is 224404555505.

It is a self number, because there is not a number n which added to its sum of digits gives 505555404422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6565022 + ... + 6641582.

It is an arithmetic number, because the mean of its divisors is an integer number (47644800567).

Almost surely, 2^505555404422 is an apocalyptic number.

505555404422 is a deficient number, since it is larger than the sum of its proper divisors (256761404650).

505555404422 is a wasteful number, since it uses less digits than its factorization.

505555404422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93863.

The product of its (nonzero) digits is 800000, while the sum is 41.

Adding to 505555404422 its reverse (224404555505), we get a palindrome (729959959927).

The spelling of 505555404422 in words is "five hundred five billion, five hundred fifty-five million, four hundred four thousand, four hundred twenty-two".