5172866247 has 4 divisors (see below), whose sum is σ = 6897155000. Its totient is φ = 3448577496.

The previous prime is 5172866203. The next prime is 5172866263. The reversal of 5172866247 is 7426682715.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5172866247 - 2¹⁴ = 5172849863 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5172866196 and 5172866205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5171866247) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 862144372 + ... + 862144377.

It is an arithmetic number, because the mean of its divisors is an integer number (1724288750).

Almost surely, 2^5172866247 is an apocalyptic number.

5172866247 is a deficient number, since it is larger than the sum of its proper divisors (1724288753).

5172866247 is a wasteful number, since it uses less digits than its factorization.

5172866247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724288752.

The product of its digits is 1128960, while the sum is 48.

The square root of 5172866247 is about 71922.6407120873. The cubic root of 5172866247 is about 1729.4595800505.

The spelling of 5172866247 in words is "five billion, one hundred seventy-two million, eight hundred sixty-six thousand, two hundred forty-seven".