505055000 has 80 divisors (see below), whose sum is σ = 1198585080. Its totient is φ = 199424000.

The previous prime is 505054973. The next prime is 505055003. The reversal of 505055000 is 550505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505055003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 414392 + ... + 415608.

Almost surely, 2^505055000 is an apocalyptic number.

505055000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505055000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599292540).

505055000 is an abundant number, since it is smaller than the sum of its proper divisors (693530080).

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

505055000 is a wasteful number, since it uses less digits than its factorization.

505055000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 20.

The square root of 505055000 is about 22473.4287548652. The cubic root of 505055000 is about 796.3663330689.

The spelling of 505055000 in words is "five hundred five million, fifty-five thousand".