520830851 has 2 divisors, whose sum is σ = 520830852. Its totient is φ = 520830850.

The previous prime is 520830823. The next prime is 520830881. The reversal of 520830851 is 158038025.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520830851 - 2⁶ = 520830787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520830881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260415425 + 260415426.

It is an arithmetic number, because the mean of its divisors is an integer number (260415426).

Almost surely, 2^520830851 is an apocalyptic number.

520830851 is a deficient number, since it is larger than the sum of its proper divisors (1).

520830851 is an equidigital number, since it uses as much as digits as its factorization.

520830851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 520830851 is about 22821.7188441186. The cubic root of 520830851 is about 804.5732089472.

Adding to 520830851 its reverse (158038025), we get a palindrome (678868876).

The spelling of 520830851 in words is "five hundred twenty million, eight hundred thirty thousand, eight hundred fifty-one".