505545930 has 48 divisors (see below), whose sum is σ = 1315533960. Its totient is φ = 134697984.

The previous prime is 505545889. The next prime is 505545947. The reversal of 505545930 is 39545505.

505545930 is a `hidden beast` number, since 50 + 554 + 59 + 3 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 281534841 + 224011089 = 16779^2 + 14967^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192466 + ... + 195074.

Almost surely, 2^505545930 is an apocalyptic number.

505545930 is an abundant number, since it is smaller than the sum of its proper divisors (809988030).

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

505545930 is a wasteful number, since it uses less digits than its factorization.

505545930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775 (or 4772 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 505545930 is about 22484.3485562735. The cubic root of 505545930 is about 796.6242808944.

The spelling of 505545930 in words is "five hundred five million, five hundred forty-five thousand, nine hundred thirty".