520526243 has 2 divisors, whose sum is σ = 520526244. Its totient is φ = 520526242.

The previous prime is 520526219. The next prime is 520526257. The reversal of 520526243 is 342625025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520526243 - 2¹⁰ = 520525219 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520526443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260263121 + 260263122.

It is an arithmetic number, because the mean of its divisors is an integer number (260263122).

Almost surely, 2^520526243 is an apocalyptic number.

520526243 is a deficient number, since it is larger than the sum of its proper divisors (1).

520526243 is an equidigital number, since it uses as much as digits as its factorization.

520526243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 520526243 is about 22815.0442252475. The cubic root of 520526243 is about 804.4163267724.

The spelling of 520526243 in words is "five hundred twenty million, five hundred twenty-six thousand, two hundred forty-three".