505534420 has 48 divisors (see below), whose sum is σ = 1084466880. Its totient is φ = 197894144.

The previous prime is 505534399. The next prime is 505534429. The reversal of 505534420 is 24435505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505534429) 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, 302427 + ... + 304093.

It is an arithmetic number, because the mean of its divisors is an integer number (22593060).

Almost surely, 2^505534420 is an apocalyptic number.

It is an amenable number.

505534420 is an abundant number, since it is smaller than the sum of its proper divisors (578932460).

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

505534420 is a wasteful number, since it uses less digits than its factorization.

505534420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 505534420 is about 22484.0925989910. The cubic root of 505534420 is about 796.6182351430.

Adding to 505534420 its reverse (24435505), we get a palindrome (529969925).

The spelling of 505534420 in words is "five hundred five million, five hundred thirty-four thousand, four hundred twenty".