517447138 has 8 divisors (see below), whose sum is σ = 835876188. Its totient is φ = 238821744.

The previous prime is 517447093. The next prime is 517447153. The reversal of 517447138 is 831744715.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 500282689 + 17164449 = 22367^2 + 4143^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 517447138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9950881 + ... + 9950932.

Almost surely, 2^517447138 is an apocalyptic number.

517447138 is a deficient number, since it is larger than the sum of its proper divisors (318429050).

517447138 is a wasteful number, since it uses less digits than its factorization.

517447138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19901828.

The product of its digits is 94080, while the sum is 40.

The square root of 517447138 is about 22747.4644301294. The cubic root of 517447138 is about 802.8270490161.

The spelling of 517447138 in words is "five hundred seventeen million, four hundred forty-seven thousand, one hundred thirty-eight".