505555572 has 24 divisors (see below), whose sum is σ = 1241716000. Its totient is φ = 159649056.

The previous prime is 505555541. The next prime is 505555577. The reversal of 505555572 is 275555505.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 505555572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505555577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108447 + ... + 1108902.

Almost surely, 2^505555572 is an apocalyptic number.

It is an amenable number.

505555572 is an abundant number, since it is smaller than the sum of its proper divisors (736160428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505555572 is a wasteful number, since it uses less digits than its factorization.

505555572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217375 (or 2217373 counting only the distinct ones).

The product of its (nonzero) digits is 218750, while the sum is 39.

The square root of 505555572 is about 22484.5629710697. The cubic root of 505555572 is about 796.6293453880.

The spelling of 505555572 in words is "five hundred five million, five hundred fifty-five thousand, five hundred seventy-two".