517220005 has 8 divisors (see below), whose sum is σ = 627063192. Its totient is φ = 409509888.

The previous prime is 517219991. The next prime is 517220009. The reversal of 517220005 is 500022715.

It can be written as a sum of positive squares in 4 ways, for example, as 81162081 + 436057924 = 9009^2 + 20882^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 517220005 - 2¹³ = 517211813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517220009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532732 + ... + 533701.

It is an arithmetic number, because the mean of its divisors is an integer number (78382899).

Almost surely, 2^517220005 is an apocalyptic number.

It is an amenable number.

517220005 is a deficient number, since it is larger than the sum of its proper divisors (109843187).

517220005 is a wasteful number, since it uses less digits than its factorization.

517220005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066535.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 517220005 is about 22742.4713916496. The cubic root of 517220005 is about 802.7095650647.

The spelling of 517220005 in words is "five hundred seventeen million, two hundred twenty thousand, five".