520980617 has 2 divisors, whose sum is σ = 520980618. Its totient is φ = 520980616.

The previous prime is 520980599. The next prime is 520980631. The reversal of 520980617 is 716089025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392475721 + 128504896 = 19811^2 + 11336^2 .

It is a cyclic number.

It is not a de Polignac number, because 520980617 - 2⁶ = 520980553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520980517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260490308 + 260490309.

It is an arithmetic number, because the mean of its divisors is an integer number (260490309).

Almost surely, 2^520980617 is an apocalyptic number.

It is an amenable number.

520980617 is a deficient number, since it is larger than the sum of its proper divisors (1).

520980617 is an equidigital number, since it uses as much as digits as its factorization.

520980617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 520980617 is about 22824.9998247536. Note that the first 3 decimals coincide. The cubic root of 520980617 is about 804.6503204592.

The spelling of 520980617 in words is "five hundred twenty million, nine hundred eighty thousand, six hundred seventeen".