505500500 has 24 divisors (see below), whose sum is σ = 1104014184. Its totient is φ = 202200000.

The previous prime is 505500493. The next prime is 505500533. The reversal of 505500500 is 5005505.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7496644 + 498003856 = 2738^2 + 22316^2 .

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

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 505001 + ... + 506000.

It is an arithmetic number, because the mean of its divisors is an integer number (46000591).

Almost surely, 2^505500500 is an apocalyptic number.

505500500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505500500 is an abundant number, since it is smaller than the sum of its proper divisors (598513684).

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

505500500 is a wasteful number, since it uses less digits than its factorization.

505500500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011020 (or 1011008 counting only the distinct ones).

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

The square root of 505500500 is about 22483.3382752651. The cubic root of 505500500 is about 796.6004177641.

The spelling of 505500500 in words is "five hundred five million, five hundred thousand, five hundred".