520007171 has 2 divisors, whose sum is σ = 520007172. Its totient is φ = 520007170.

The previous prime is 520007119. The next prime is 520007183. The reversal of 520007171 is 171700025.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520007171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520001171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260003585 + 260003586.

It is an arithmetic number, because the mean of its divisors is an integer number (260003586).

Almost surely, 2^520007171 is an apocalyptic number.

520007171 is a deficient number, since it is larger than the sum of its proper divisors (1).

520007171 is an equidigital number, since it uses as much as digits as its factorization.

520007171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 520007171 is about 22803.6657360171. The cubic root of 520007171 is about 804.1488481911.

Adding to 520007171 its reverse (171700025), we get a palindrome (691707196).

The spelling of 520007171 in words is "five hundred twenty million, seven thousand, one hundred seventy-one".