505205500 has 24 divisors (see below), whose sum is σ = 1103369904. Its totient is φ = 202082000.

The previous prime is 505205489. The next prime is 505205537. The reversal of 505205500 is 5502505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504706 + ... + 505705.

It is an arithmetic number, because the mean of its divisors is an integer number (45973746).

Almost surely, 2^505205500 is an apocalyptic number.

505205500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505205500 is an abundant number, since it is smaller than the sum of its proper divisors (598164404).

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

505205500 is a wasteful number, since it uses less digits than its factorization.

505205500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010430 (or 1010418 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 505205500 is about 22476.7769041738. The cubic root of 505205500 is about 796.4454275769.

The spelling of 505205500 in words is "five hundred five million, two hundred five thousand, five hundred".