520243560 has 256 divisors, whose sum is σ = 1853856000. Its totient is φ = 131010048.

The previous prime is 520243531. The next prime is 520243583. The reversal of 520243560 is 65342025.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1661964 + ... + 1662276.

It is an arithmetic number, because the mean of its divisors is an integer number (7241625).

Almost surely, 2^520243560 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 520243560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926928000).

520243560 is an abundant number, since it is smaller than the sum of its proper divisors (1333612440).

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

520243560 is a wasteful number, since it uses less digits than its factorization.

520243560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 520243560 is about 22808.8482830677. The cubic root of 520243560 is about 804.2706818603.

Adding to 520243560 its reverse (65342025), we get a palindrome (585585585).

The spelling of 520243560 in words is "five hundred twenty million, two hundred forty-three thousand, five hundred sixty".