520171241 has 2 divisors, whose sum is σ = 520171242. Its totient is φ = 520171240.

The previous prime is 520171237. The next prime is 520171247. The reversal of 520171241 is 142171025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479785216 + 40386025 = 21904^2 + 6355^2 .

It is a cyclic number.

It is not a de Polignac number, because 520171241 - 2² = 520171237 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520171247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260085620 + 260085621.

It is an arithmetic number, because the mean of its divisors is an integer number (260085621).

Almost surely, 2^520171241 is an apocalyptic number.

It is an amenable number.

520171241 is a deficient number, since it is larger than the sum of its proper divisors (1).

520171241 is an equidigital number, since it uses as much as digits as its factorization.

520171241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 520171241 is about 22807.2629002254. The cubic root of 520171241 is about 804.2334129403.

The spelling of 520171241 in words is "five hundred twenty million, one hundred seventy-one thousand, two hundred forty-one".