520949959 has 2 divisors, whose sum is σ = 520949960. Its totient is φ = 520949958.

The previous prime is 520949929. The next prime is 520949969. The reversal of 520949959 is 959949025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520949959 - 2⁷ = 520949831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520949909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260474979 + 260474980.

It is an arithmetic number, because the mean of its divisors is an integer number (260474980).

Almost surely, 2^520949959 is an apocalyptic number.

520949959 is a deficient number, since it is larger than the sum of its proper divisors (1).

520949959 is an equidigital number, since it uses as much as digits as its factorization.

520949959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312200, while the sum is 52.

The square root of 520949959 is about 22824.3282266971. The cubic root of 520949959 is about 804.6345364725.

The spelling of 520949959 in words is "five hundred twenty million, nine hundred forty-nine thousand, nine hundred fifty-nine".