520775081 has 2 divisors, whose sum is σ = 520775082. Its totient is φ = 520775080.

The previous prime is 520775029. The next prime is 520775113. The reversal of 520775081 is 180577025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406627225 + 114147856 = 20165^2 + 10684^2 .

It is a cyclic number.

It is not a de Polignac number, because 520775081 - 2¹⁴ = 520758697 is a prime.

It is a super-2 number, since 2×520775081² = 542413369981113122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520775581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260387540 + 260387541.

It is an arithmetic number, because the mean of its divisors is an integer number (260387541).

Almost surely, 2^520775081 is an apocalyptic number.

It is an amenable number.

520775081 is a deficient number, since it is larger than the sum of its proper divisors (1).

520775081 is an equidigital number, since it uses as much as digits as its factorization.

520775081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 520775081 is about 22820.4969490149. The cubic root of 520775081 is about 804.5444903146.

The spelling of 520775081 in words is "five hundred twenty million, seven hundred seventy-five thousand, eighty-one".