520530400 has 72 divisors (see below), whose sum is σ = 1368521784. Its totient is φ = 192192000.

The previous prime is 520530317. The next prime is 520530407. The reversal of 520530400 is 4035025.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520530407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14626 + ... + 35425.

It is an arithmetic number, because the mean of its divisors is an integer number (19007247).

Almost surely, 2^520530400 is an apocalyptic number.

520530400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520530400 is an abundant number, since it is smaller than the sum of its proper divisors (847991384).

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

520530400 is a wasteful number, since it uses less digits than its factorization.

520530400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50084 (or 50071 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 520530400 is about 22815.1353272340. The cubic root of 520530400 is about 804.4184681629.

Adding to 520530400 its reverse (4035025), we get a palindrome (524565425).

The spelling of 520530400 in words is "five hundred twenty million, five hundred thirty thousand, four hundred".