520388255 has 8 divisors (see below), whose sum is σ = 634703424. Its totient is φ = 409485600.

The previous prime is 520388243. The next prime is 520388257. The reversal of 520388255 is 552883025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520388255 - 2⁶ = 520388191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520388257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852791 + ... + 853400.

It is an arithmetic number, because the mean of its divisors is an integer number (79337928).

Almost surely, 2^520388255 is an apocalyptic number.

520388255 is a deficient number, since it is larger than the sum of its proper divisors (114315169).

520388255 is a wasteful number, since it uses less digits than its factorization.

520388255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706257.

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 520388255 is about 22812.0199675522. The cubic root of 520388255 is about 804.3452387075.

The spelling of 520388255 in words is "five hundred twenty million, three hundred eighty-eight thousand, two hundred fifty-five".