520255008 has 288 divisors, whose sum is σ = 1881532800. Its totient is φ = 136940544.

The previous prime is 520254991. The next prime is 520255019. The reversal of 520255008 is 800552025.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1021858 + ... + 1022366.

It is an arithmetic number, because the mean of its divisors is an integer number (6533100).

Almost surely, 2^520255008 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 520255008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940766400).

520255008 is an abundant number, since it is smaller than the sum of its proper divisors (1361277792).

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

520255008 is a wasteful number, since it uses less digits than its factorization.

520255008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 520255008 is about 22809.0992369274. The cubic root of 520255008 is about 804.2765811633.

The spelling of 520255008 in words is "five hundred twenty million, two hundred fifty-five thousand, eight".