517145816 has 32 divisors (see below), whose sum is σ = 1063314000. Its totient is φ = 233840640.

The previous prime is 517145801. The next prime is 517145851. The reversal of 517145816 is 618541715.

It is a self number, because there is not a number n which added to its sum of digits gives 517145816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760 + ... + 32208.

Almost surely, 2^517145816 is an apocalyptic number.

It is an amenable number.

517145816 is an abundant number, since it is smaller than the sum of its proper divisors (546168184).

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

517145816 is a wasteful number, since it uses less digits than its factorization.

517145816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30659 (or 30655 counting only the distinct ones).

The product of its digits is 33600, while the sum is 38.

The square root of 517145816 is about 22740.8402659181. The cubic root of 517145816 is about 802.6711835463.

The spelling of 517145816 in words is "five hundred seventeen million, one hundred forty-five thousand, eight hundred sixteen".