520520000 has 420 divisors, whose sum is σ = 1742517216. Its totient is φ = 149760000.

The previous prime is 520519973. The next prime is 520520009. The reversal of 520520000 is 25025.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520520009) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 40039994 + ... + 40040006.

Almost surely, 2^520520000 is an apocalyptic number.

520520000 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 520520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871258608).

520520000 is an abundant number, since it is smaller than the sum of its proper divisors (1221997216).

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

520520000 is a wasteful number, since it uses less digits than its factorization.

520520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 520520000 is about 22814.9074072195. The cubic root of 520520000 is about 804.4131108019.

Adding to 520520000 its reverse (25025), we get a palindrome (520545025).

The spelling of 520520000 in words is "five hundred twenty million, five hundred twenty thousand".