505080 has 96 divisors (see below), whose sum is σ = 1740960. Its totient is φ = 126720.

The previous prime is 505073. The next prime is 505091. The reversal of 505080 is 80505.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8250 + ... + 8310.

It is an arithmetic number, because the mean of its divisors is an integer number (18135).

2⁵⁰⁵⁰⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870480).

505080 is an abundant number, since it is smaller than the sum of its proper divisors (1235880).

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

505080 is a wasteful number, since it uses less digits than its factorization.

505080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 505080 is about 710.6898057521. The cubic root of 505080 is about 79.6379472780.

Adding to 505080 its reverse (80505), we get a palindrome (585585).

The spelling of 505080 in words is "five hundred five thousand, eighty".