5172209505 has 32 divisors (see below), whose sum is σ = 9321016320. Its totient is φ = 2720718720.

The previous prime is 5172209473. The next prime is 5172209533. The reversal of 5172209505 is 5059022715.

It is not a de Polignac number, because 5172209505 - 2⁵ = 5172209473 is a prime.

It is a super-3 number, since 3×5172209505³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5172209505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252561 + ... + 272270.

It is an arithmetic number, because the mean of its divisors is an integer number (291281760).

Almost surely, 2^5172209505 is an apocalyptic number.

It is an amenable number.

5172209505 is a deficient number, since it is larger than the sum of its proper divisors (4148806815).

5172209505 is a wasteful number, since it uses less digits than its factorization.

5172209505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524918 (or 524912 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 5172209505 is about 71918.0749533801. The cubic root of 5172209505 is about 1729.3863867916.

The spelling of 5172209505 in words is "five billion, one hundred seventy-two million, two hundred nine thousand, five hundred five".