520531040 has 96 divisors (see below), whose sum is σ = 1270805760. Its totient is φ = 201383424.

The previous prime is 520531027. The next prime is 520531093. The reversal of 520531040 is 40135025.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 632069 + ... + 632891.

It is an arithmetic number, because the mean of its divisors is an integer number (13237560).

Almost surely, 2^520531040 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 520531040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635402880).

520531040 is an abundant number, since it is smaller than the sum of its proper divisors (750274720).

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

520531040 is a wasteful number, since it uses less digits than its factorization.

520531040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 520531040 is about 22815.1493530067. The cubic root of 520531040 is about 804.4187978443.

Adding to 520531040 its reverse (40135025), we get a palindrome (560666065).

The spelling of 520531040 in words is "five hundred twenty million, five hundred thirty-one thousand, forty".