520684271 has 2 divisors, whose sum is σ = 520684272. Its totient is φ = 520684270.

The previous prime is 520684231. The next prime is 520684273. The reversal of 520684271 is 172486025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520684271 - 2⁶ = 520684207 is a prime.

It is a super-2 number, since 2×520684271² = 542224220133602882, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 520684273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520684273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260342135 + 260342136.

It is an arithmetic number, because the mean of its divisors is an integer number (260342136).

Almost surely, 2^520684271 is an apocalyptic number.

520684271 is a deficient number, since it is larger than the sum of its proper divisors (1).

520684271 is an equidigital number, since it uses as much as digits as its factorization.

520684271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 520684271 is about 22818.5072035837. The cubic root of 520684271 is about 804.4977235274.

The spelling of 520684271 in words is "five hundred twenty million, six hundred eighty-four thousand, two hundred seventy-one".