517272847 has 16 divisors (see below), whose sum is σ = 638972992. Its totient is φ = 407773440.

The previous prime is 517272827. The next prime is 517272857. The reversal of 517272847 is 748272715.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517272847 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517272827) 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, 14947 + ... + 35467.

It is an arithmetic number, because the mean of its divisors is an integer number (39935812).

Almost surely, 2^517272847 is an apocalyptic number.

517272847 is a deficient number, since it is larger than the sum of its proper divisors (121700145).

517272847 is a wasteful number, since it uses less digits than its factorization.

517272847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20818.

The product of its digits is 219520, while the sum is 43.

The square root of 517272847 is about 22743.6331090703. The cubic root of 517272847 is about 802.7369005209.

The spelling of 517272847 in words is "five hundred seventeen million, two hundred seventy-two thousand, eight hundred forty-seven".