520331000 has 256 divisors, whose sum is σ = 1493856000. Its totient is φ = 169344000.

The previous prime is 520330999. The next prime is 520331023. The reversal of 520331000 is 133025.

It is a super-2 number, since 2×520331000² = 541488699122000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 63 ways as a sum of consecutive naturals, for example, 12690980 + ... + 12691020.

It is an arithmetic number, because the mean of its divisors is an integer number (5835375).

Almost surely, 2^520331000 is an apocalyptic number.

520331000 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 520331000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746928000).

520331000 is an abundant number, since it is smaller than the sum of its proper divisors (973525000).

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

520331000 is a wasteful number, since it uses less digits than its factorization.

520331000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 520331000 is about 22810.7650025158. The cubic root of 520331000 is about 804.3157386338.

Adding to 520331000 its reverse (133025), we get a palindrome (520464025).

The spelling of 520331000 in words is "five hundred twenty million, three hundred thirty-one thousand".