505022520 has 128 divisors (see below), whose sum is σ = 1560176640. Its totient is φ = 130713600.

The previous prime is 505022513. The next prime is 505022533. The reversal of 505022520 is 25220505.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 851344 + ... + 851936.

It is an arithmetic number, because the mean of its divisors is an integer number (12188880).

Almost surely, 2^505022520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505022520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (780088320).

505022520 is an abundant number, since it is smaller than the sum of its proper divisors (1055154120).

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

505022520 is a wasteful number, since it uses less digits than its factorization.

505022520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 505022520 is about 22472.7061120818. The cubic root of 505022520 is about 796.3492613091.

The spelling of 505022520 in words is "five hundred five million, twenty-two thousand, five hundred twenty".