505530280 has 32 divisors (see below), whose sum is σ = 1138083840. Its totient is φ = 202098240.

The previous prime is 505530227. The next prime is 505530293. The reversal of 505530280 is 82035505.

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, 133777 + ... + 137503.

It is an arithmetic number, because the mean of its divisors is an integer number (35565120).

Almost surely, 2^505530280 is an apocalyptic number.

It is an amenable number.

505530280 is an abundant number, since it is smaller than the sum of its proper divisors (632553560).

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

505530280 is a wasteful number, since it uses less digits than its factorization.

505530280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129 (or 7125 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 505530280 is about 22484.0005337129. Note that the first 3 decimals coincide. The cubic root of 505530280 is about 796.6160605409.

Adding to 505530280 its reverse (82035505), we get a palindrome (587565785).

The spelling of 505530280 in words is "five hundred five million, five hundred thirty thousand, two hundred eighty".