520133539 has 2 divisors, whose sum is σ = 520133540. Its totient is φ = 520133538.

The previous prime is 520133507. The next prime is 520133563. The reversal of 520133539 is 935331025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520133539 - 2⁵ = 520133507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520133539.

It is not a weakly prime, because it can be changed into another prime (520133039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260066769 + 260066770.

It is an arithmetic number, because the mean of its divisors is an integer number (260066770).

Almost surely, 2^520133539 is an apocalyptic number.

520133539 is a deficient number, since it is larger than the sum of its proper divisors (1).

520133539 is an equidigital number, since it uses as much as digits as its factorization.

520133539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 520133539 is about 22806.4363502937. The cubic root of 520133539 is about 804.2139821975.

The spelling of 520133539 in words is "five hundred twenty million, one hundred thirty-three thousand, five hundred thirty-nine".