520402411 has 2 divisors, whose sum is σ = 520402412. Its totient is φ = 520402410.

The previous prime is 520402409. The next prime is 520402417. The reversal of 520402411 is 114204025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520402411 - 2¹ = 520402409 is a prime.

It is a super-2 number, since 2×520402411² = 541637338749225842, which contains 22 as substring.

Together with 520402409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (520402417) 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, 260201205 + 260201206.

It is an arithmetic number, because the mean of its divisors is an integer number (260201206).

Almost surely, 2^520402411 is an apocalyptic number.

520402411 is a deficient number, since it is larger than the sum of its proper divisors (1).

520402411 is an equidigital number, since it uses as much as digits as its factorization.

520402411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 520402411 is about 22812.3302404643. The cubic root of 520402411 is about 804.3525321132.

Adding to 520402411 its reverse (114204025), we get a palindrome (634606436).

The spelling of 520402411 in words is "five hundred twenty million, four hundred two thousand, four hundred eleven".