505530120 has 64 divisors (see below), whose sum is σ = 1548875520. Its totient is φ = 131938304.

The previous prime is 505530107. The next prime is 505530121. The reversal of 505530120 is 21035505.

It is not an unprimeable number, because it can be changed into a prime (505530121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39177 + ... + 50456.

It is an arithmetic number, because the mean of its divisors is an integer number (24201180).

Almost surely, 2^505530120 is an apocalyptic number.

It is an amenable number.

505530120 is an abundant number, since it is smaller than the sum of its proper divisors (1043345400).

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

505530120 is a wasteful number, since it uses less digits than its factorization.

505530120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89694 (or 89690 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 505530120 is about 22483.9969756269. The cubic root of 505530120 is about 796.6159764981.

Adding to 505530120 its reverse (21035505), we get a palindrome (526565625).

The spelling of 505530120 in words is "five hundred five million, five hundred thirty thousand, one hundred twenty".