5172172529 has 4 divisors (see below), whose sum is σ = 5223382260. Its totient is φ = 5120962800.

The previous prime is 5172172507. The next prime is 5172172543. The reversal of 5172172529 is 9252712715.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4279776400 + 892396129 = 65420^2 + 29873^2 .

It is a cyclic number.

It is not a de Polignac number, because 5172172529 - 2²⁴ = 5155395313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5172175529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25604714 + ... + 25604915.

It is an arithmetic number, because the mean of its divisors is an integer number (1305845565).

Almost surely, 2^5172172529 is an apocalyptic number.

It is an amenable number.

5172172529 is a deficient number, since it is larger than the sum of its proper divisors (51209731).

5172172529 is a wasteful number, since it uses less digits than its factorization.

5172172529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51209730.

The product of its digits is 88200, while the sum is 41.

The square root of 5172172529 is about 71917.8178826360. The cubic root of 5172172529 is about 1729.3822656681.

The spelling of 5172172529 in words is "five billion, one hundred seventy-two million, one hundred seventy-two thousand, five hundred twenty-nine".