517445145 has 192 divisors, whose sum is σ = 1181952000. Its totient is φ = 213155712.

The previous prime is 517445083. The next prime is 517445161. The reversal of 517445145 is 541544715.

It is not a de Polignac number, because 517445145 - 2⁶ = 517445081 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2890666 + ... + 2890844.

It is an arithmetic number, because the mean of its divisors is an integer number (6156000).

Almost surely, 2^517445145 is an apocalyptic number.

It is an amenable number.

517445145 is an abundant number, since it is smaller than the sum of its proper divisors (664506855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

517445145 is a wasteful number, since it uses less digits than its factorization.

517445145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 236 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 517445145 is about 22747.4206230069. The cubic root of 517445145 is about 802.8260182916.

The spelling of 517445145 in words is "five hundred seventeen million, four hundred forty-five thousand, one hundred forty-five".