520529 has 2 divisors, whose sum is σ = 520530. Its totient is φ = 520528.

The previous prime is 520451. The next prime is 520547. The reversal of 520529 is 925025.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452929 + 67600 = 673^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 520529 - 2¹² = 516433 is a prime.

It is not a weakly prime, because it can be changed into another prime (520549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260264 + 260265.

It is an arithmetic number, because the mean of its divisors is an integer number (260265).

2⁵²⁰⁵²⁹ is an apocalyptic number.

It is an amenable number.

520529 is a deficient number, since it is larger than the sum of its proper divisors (1).

520529 is an equidigital number, since it uses as much as digits as its factorization.

520529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 520529 is about 721.4769573590. The cubic root of 520529 is about 80.4417746984.

Subtracting 520529 from its reverse (925025), we obtain a square (404496 = 636²).

The spelling of 520529 in words is "five hundred twenty thousand, five hundred twenty-nine".