517668077 has 2 divisors, whose sum is σ = 517668078. Its totient is φ = 517668076.

The previous prime is 517668049. The next prime is 517668083. The reversal of 517668077 is 770866715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 486687721 + 30980356 = 22061^2 + 5566^2 .

It is a cyclic number.

It is not a de Polignac number, because 517668077 - 2¹² = 517663981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517668007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258834038 + 258834039.

It is an arithmetic number, because the mean of its divisors is an integer number (258834039).

Almost surely, 2^517668077 is an apocalyptic number.

It is an amenable number.

517668077 is a deficient number, since it is larger than the sum of its proper divisors (1).

517668077 is an equidigital number, since it uses as much as digits as its factorization.

517668077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 517668077 is about 22752.3202553058. The cubic root of 517668077 is about 802.9412961556.

The spelling of 517668077 in words is "five hundred seventeen million, six hundred sixty-eight thousand, seventy-seven".