517145205 has 16 divisors (see below), whose sum is σ = 829695744. Its totient is φ = 275056320.

The previous prime is 517145201. The next prime is 517145227. The reversal of 517145205 is 502541715.

It is not a de Polignac number, because 517145205 - 2² = 517145201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517145201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41466 + ... + 52475.

It is an arithmetic number, because the mean of its divisors is an integer number (51855984).

Almost surely, 2^517145205 is an apocalyptic number.

It is an amenable number.

517145205 is a deficient number, since it is larger than the sum of its proper divisors (312550539).

517145205 is a wasteful number, since it uses less digits than its factorization.

517145205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94316.

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 517145205 is about 22740.8268319338. The cubic root of 517145205 is about 802.6708674315.

The spelling of 517145205 in words is "five hundred seventeen million, one hundred forty-five thousand, two hundred five".