520280544 has 96 divisors (see below), whose sum is σ = 1575383040. Its totient is φ = 147267072.

The previous prime is 520280543. The next prime is 520280557. The reversal of 520280544 is 445082025.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520280543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69697 + ... + 76799.

It is an arithmetic number, because the mean of its divisors is an integer number (16410240).

Almost surely, 2^520280544 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 520280544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (787691520).

520280544 is an abundant number, since it is smaller than the sum of its proper divisors (1055102496).

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

520280544 is a wasteful number, since it uses less digits than its factorization.

520280544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7232 (or 7224 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 520280544 is about 22809.6590066577. The cubic root of 520280544 is about 804.2897398838.

The spelling of 520280544 in words is "five hundred twenty million, two hundred eighty thousand, five hundred forty-four".