520115471 has 2 divisors, whose sum is σ = 520115472. Its totient is φ = 520115470.

The previous prime is 520115441. The next prime is 520115483. The reversal of 520115471 is 174511025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520115471 - 2²² = 515921167 is a prime.

It is a super-3 number, since 3×520115471³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520115471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520115411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260057735 + 260057736.

It is an arithmetic number, because the mean of its divisors is an integer number (260057736).

Almost surely, 2^520115471 is an apocalyptic number.

520115471 is a deficient number, since it is larger than the sum of its proper divisors (1).

520115471 is an equidigital number, since it uses as much as digits as its factorization.

520115471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 520115471 is about 22806.0402306056. The cubic root of 520115471 is about 804.2046700335.

Adding to 520115471 its reverse (174511025), we get a palindrome (694626496).

The spelling of 520115471 in words is "five hundred twenty million, one hundred fifteen thousand, four hundred seventy-one".