520524144 has 200 divisors, whose sum is σ = 1736743008. Its totient is φ = 147432960.

The previous prime is 520524113. The next prime is 520524149. The reversal of 520524144 is 441425025.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520524149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1641874 + ... + 1642190.

Almost surely, 2^520524144 is an apocalyptic number.

520524144 is a gapful number since it is divisible by the number (54) 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 520524144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868371504).

520524144 is an abundant number, since it is smaller than the sum of its proper divisors (1216218864).

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

520524144 is a wasteful number, since it uses less digits than its factorization.

520524144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 520524144 is about 22814.9982248520. The cubic root of 520524144 is about 804.4152455127.

Adding to 520524144 its reverse (441425025), we get a palindrome (961949169).

The spelling of 520524144 in words is "five hundred twenty million, five hundred twenty-four thousand, one hundred forty-four".