5172181 has 8 divisors (see below), whose sum is σ = 5946624. Its totient is φ = 4406640.

The previous prime is 5172163. The next prime is 5172187. The reversal of 5172181 is 1812715.

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

It is not a de Polignac number, because 5172181 - 2⁵ = 5172149 is a prime.

It is a super-2 number, since 2×5172181² = 53502912593522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5172187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925 + ... + 3346.

It is an arithmetic number, because the mean of its divisors is an integer number (743328).

Almost surely, 2^5172181 is an apocalyptic number.

It is an amenable number.

5172181 is a deficient number, since it is larger than the sum of its proper divisors (774443).

5172181 is a wasteful number, since it uses less digits than its factorization.

5172181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451.

The product of its digits is 560, while the sum is 25.

The square root of 5172181 is about 2274.2429509619. The cubic root of 5172181 is about 172.9383209797.

Adding to 5172181 its reverse (1812715), we get a palindrome (6984896).

The spelling of 5172181 in words is "five million, one hundred seventy-two thousand, one hundred eighty-one".