520522524 has 144 divisors (see below), whose sum is σ = 1463061600. Its totient is φ = 161803008.

The previous prime is 520522501. The next prime is 520522529. The reversal of 520522524 is 425225025.

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 (520522529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4775382 + ... + 4775490.

It is an arithmetic number, because the mean of its divisors is an integer number (10160150).

Almost surely, 2^520522524 is an apocalyptic number.

520522524 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 520522524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (731530800).

520522524 is an abundant number, since it is smaller than the sum of its proper divisors (942539076).

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

520522524 is a wasteful number, since it uses less digits than its factorization.

520522524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 520522524 is about 22814.9627218630. The cubic root of 520522524 is about 804.4144109987.

Adding to 520522524 its reverse (425225025), we get a palindrome (945747549).

The spelling of 520522524 in words is "five hundred twenty million, five hundred twenty-two thousand, five hundred twenty-four".