520506255 has 16 divisors (see below), whose sum is σ = 881799264. Its totient is φ = 261273600.

The previous prime is 520506241. The next prime is 520506263. The reversal of 520506255 is 552605025.

It is not a de Polignac number, because 520506255 - 2⁵ = 520506223 is a prime.

It is a super-2 number, since 2×520506255² = 541853522988250050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020346 + ... + 1020855.

It is an arithmetic number, because the mean of its divisors is an integer number (55112454).

Almost surely, 2^520506255 is an apocalyptic number.

520506255 is a deficient number, since it is larger than the sum of its proper divisors (361293009).

520506255 is a wasteful number, since it uses less digits than its factorization.

520506255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041226.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 520506255 is about 22814.6061767456. The cubic root of 520506255 is about 804.4060302186.

The spelling of 520506255 in words is "five hundred twenty million, five hundred six thousand, two hundred fifty-five".