505231500 has 96 divisors (see below), whose sum is σ = 1557855936. Its totient is φ = 126796800.

The previous prime is 505231471. The next prime is 505231511. The reversal of 505231500 is 5132505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15594 + ... + 35406.

It is an arithmetic number, because the mean of its divisors is an integer number (16227666).

Almost surely, 2^505231500 is an apocalyptic number.

505231500 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 505231500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778927968).

505231500 is an abundant number, since it is smaller than the sum of its proper divisors (1052624436).

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

505231500 is a wasteful number, since it uses less digits than its factorization.

505231500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19852 (or 19840 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 505231500 is about 22477.3552714727. The cubic root of 505231500 is about 796.4590901531.

The spelling of 505231500 in words is "five hundred five million, two hundred thirty-one thousand, five hundred".