505505500 has 96 divisors (see below), whose sum is σ = 1165207680. Its totient is φ = 191206400.

The previous prime is 505505479. The next prime is 505505501. The reversal of 505505500 is 5505505.

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 (505505501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1299306 + ... + 1299694.

It is an arithmetic number, because the mean of its divisors is an integer number (12137580).

Almost surely, 2^505505500 is an apocalyptic number.

505505500 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 505505500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582603840).

505505500 is an abundant number, since it is smaller than the sum of its proper divisors (659702180).

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

505505500 is a wasteful number, since it uses less digits than its factorization.

505505500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 25.

The square root of 505505500 is about 22483.4494684423. The cubic root of 505505500 is about 796.6030441967.

The spelling of 505505500 in words is "five hundred five million, five hundred five thousand, five hundred".