505280500 has 48 divisors (see below), whose sum is σ = 1120077504. Its totient is φ = 199082400.

The previous prime is 505280497. The next prime is 505280513. The reversal of 505280500 is 5082505.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25959 + ... + 41041.

It is an arithmetic number, because the mean of its divisors is an integer number (23334948).

Almost surely, 2^505280500 is an apocalyptic number.

505280500 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 505280500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560038752).

505280500 is an abundant number, since it is smaller than the sum of its proper divisors (614797004).

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

505280500 is a wasteful number, since it uses less digits than its factorization.

505280500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15169 (or 15157 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 505280500 is about 22478.4452309318. The cubic root of 505280500 is about 796.4848375803.

The spelling of 505280500 in words is "five hundred five million, two hundred eighty thousand, five hundred".