505050920 has 32 divisors (see below), whose sum is σ = 1239671520. Its totient is φ = 183654720.

The previous prime is 505050907. The next prime is 505050937. The reversal of 505050920 is 29050505.

It is a self number, because there is not a number n which added to its sum of digits gives 505050920.

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, 573482 + ... + 574361.

It is an arithmetic number, because the mean of its divisors is an integer number (38739735).

Almost surely, 2^505050920 is an apocalyptic number.

It is an amenable number.

505050920 is an abundant number, since it is smaller than the sum of its proper divisors (734620600).

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

505050920 is a wasteful number, since it uses less digits than its factorization.

505050920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147865 (or 1147861 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 505050920 is about 22473.3379808163. The cubic root of 505050920 is about 796.3641886270.

The spelling of 505050920 in words is "five hundred five million, fifty thousand, nine hundred twenty".