520001171 has 2 divisors, whose sum is σ = 520001172. Its totient is φ = 520001170.

The previous prime is 520001159. The next prime is 520001201. The reversal of 520001171 is 171100025.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520001171 is a prime.

It is not a weakly prime, because it can be changed into another prime (520007171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260000585 + 260000586.

It is an arithmetic number, because the mean of its divisors is an integer number (260000586).

Almost surely, 2^520001171 is an apocalyptic number.

520001171 is a deficient number, since it is larger than the sum of its proper divisors (1).

520001171 is an equidigital number, since it uses as much as digits as its factorization.

520001171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 520001171 is about 22803.5341778418. The cubic root of 520001171 is about 804.1457553417.

Adding to 520001171 its reverse (171100025), we get a palindrome (691101196).

The spelling of 520001171 in words is "five hundred twenty million, one thousand, one hundred seventy-one".