520255281 has 16 divisors (see below), whose sum is σ = 853752704. Its totient is φ = 274420224.

The previous prime is 520255243. The next prime is 520255289. The reversal of 520255281 is 182552025.

It is not a de Polignac number, because 520255281 - 2¹¹ = 520253233 is a prime.

It is a super-2 number, since 2×520255281² = 541331114816777922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520255289) 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, 952576 + ... + 953121.

It is an arithmetic number, because the mean of its divisors is an integer number (53359544).

Almost surely, 2^520255281 is an apocalyptic number.

It is an amenable number.

520255281 is a deficient number, since it is larger than the sum of its proper divisors (333497423).

520255281 is a wasteful number, since it uses less digits than its factorization.

520255281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905720.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 520255281 is about 22809.1052213803. The cubic root of 520255281 is about 804.2767218427.

The spelling of 520255281 in words is "five hundred twenty million, two hundred fifty-five thousand, two hundred eighty-one".