520346069 has 2 divisors, whose sum is σ = 520346070. Its totient is φ = 520346068.

The previous prime is 520346023. The next prime is 520346077. The reversal of 520346069 is 960643025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306075025 + 214271044 = 17495^2 + 14638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520346069 is a prime.

It is a super-2 number, since 2×520346069² = 541520063047505522, which contains 22 as substring.

It is equal to p_27369800 and since 520346069 and 27369800 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520346669) 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, 260173034 + 260173035.

It is an arithmetic number, because the mean of its divisors is an integer number (260173035).

Almost surely, 2^520346069 is an apocalyptic number.

It is an amenable number.

520346069 is a deficient number, since it is larger than the sum of its proper divisors (1).

520346069 is an equidigital number, since it uses as much as digits as its factorization.

520346069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 520346069 is about 22811.0953046977. The cubic root of 520346069 is about 804.3235029972.

The spelling of 520346069 in words is "five hundred twenty million, three hundred forty-six thousand, sixty-nine".