505220508 has 36 divisors (see below), whose sum is σ = 1375323768. Its totient is φ = 155452320.

The previous prime is 505220489. The next prime is 505220557. The reversal of 505220508 is 805022505.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 539298 + ... + 540233.

It is an arithmetic number, because the mean of its divisors is an integer number (38203438).

Almost surely, 2^505220508 is an apocalyptic number.

It is an amenable number.

505220508 is an abundant number, since it is smaller than the sum of its proper divisors (870103260).

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

505220508 is a wasteful number, since it uses less digits than its factorization.

505220508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079554 (or 1079549 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 505220508 is about 22477.1107573905. The cubic root of 505220508 is about 796.4533140935.

The spelling of 505220508 in words is "five hundred five million, two hundred twenty thousand, five hundred eight".