505043800 has 24 divisors (see below), whose sum is σ = 1174227300. Its totient is φ = 202017440.

The previous prime is 505043797. The next prime is 505043801. The reversal of 505043800 is 8340505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505043801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1262410 + ... + 1262809.

Almost surely, 2^505043800 is an apocalyptic number.

505043800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505043800 is an abundant number, since it is smaller than the sum of its proper divisors (669183500).

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

505043800 is a wasteful number, since it uses less digits than its factorization.

505043800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525235 (or 2525226 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 505043800 is about 22473.1795703234. The cubic root of 505043800 is about 796.3604463379.

The spelling of 505043800 in words is "five hundred five million, forty-three thousand, eight hundred".