517072447 has 8 divisors (see below), whose sum is σ = 531388656. Its totient is φ = 502774272.

The previous prime is 517072411. The next prime is 517072469. The reversal of 517072447 is 744270715.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517072447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517072477) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70623 + ... + 77599.

It is an arithmetic number, because the mean of its divisors is an integer number (66423582).

Almost surely, 2^517072447 is an apocalyptic number.

517072447 is a deficient number, since it is larger than the sum of its proper divisors (14316209).

517072447 is a wasteful number, since it uses less digits than its factorization.

517072447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9017.

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 517072447 is about 22739.2270537061. The cubic root of 517072447 is about 802.6332226427.

The spelling of 517072447 in words is "five hundred seventeen million, seventy-two thousand, four hundred forty-seven".