520551709879 has 2 divisors, whose sum is σ = 520551709880. Its totient is φ = 520551709878.

The previous prime is 520551709837. The next prime is 520551709939. The reversal of 520551709879 is 978907155025.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520551709879 - 2⁹ = 520551709367 is a prime.

It is a super-3 number, since 3×520551709879³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520551709679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260275854939 + 260275854940.

It is an arithmetic number, because the mean of its divisors is an integer number (260275854940).

Almost surely, 2^520551709879 is an apocalyptic number.

520551709879 is a deficient number, since it is larger than the sum of its proper divisors (1).

520551709879 is an equidigital number, since it uses as much as digits as its factorization.

520551709879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938000, while the sum is 58.

The spelling of 520551709879 in words is "five hundred twenty billion, five hundred fifty-one million, seven hundred nine thousand, eight hundred seventy-nine".