520786361 has 2 divisors, whose sum is σ = 520786362. Its totient is φ = 520786360.

The previous prime is 520786337. The next prime is 520786363. The reversal of 520786361 is 163687025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477160336 + 43626025 = 21844^2 + 6605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520786361 is a prime.

Together with 520786363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520786363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260393180 + 260393181.

It is an arithmetic number, because the mean of its divisors is an integer number (260393181).

Almost surely, 2^520786361 is an apocalyptic number.

It is an amenable number.

520786361 is a deficient number, since it is larger than the sum of its proper divisors (1).

520786361 is an equidigital number, since it uses as much as digits as its factorization.

520786361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 520786361 is about 22820.7440939160. The cubic root of 520786361 is about 804.5502990900.

The spelling of 520786361 in words is "five hundred twenty million, seven hundred eighty-six thousand, three hundred sixty-one".