520705500 has 192 divisors, whose sum is σ = 1753629696. Its totient is φ = 117600000.

The previous prime is 520705489. The next prime is 520705501. The reversal of 520705500 is 5507025.

It is a super-2 number, since 2×520705500² = 542268435460500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520705501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1060255 + ... + 1060745.

It is an arithmetic number, because the mean of its divisors is an integer number (9133488).

Almost surely, 2^520705500 is an apocalyptic number.

520705500 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 520705500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876814848).

520705500 is an abundant number, since it is smaller than the sum of its proper divisors (1232924196).

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

520705500 is a wasteful number, since it uses less digits than its factorization.

520705500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 520705500 is about 22818.9723694999. The cubic root of 520705500 is about 804.5086568646.

The spelling of 520705500 in words is "five hundred twenty million, seven hundred five thousand, five hundred".