5181729 has 16 divisors (see below), whose sum is σ = 7938048. Its totient is φ = 2945232.

The previous prime is 5181721. The next prime is 5181733. The reversal of 5181729 is 9271815.

It is not a de Polignac number, because 5181729 - 2³ = 5181721 is a prime.

It is a Curzon number.

5181729 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5181729.

It is not an unprimeable number, because it can be changed into a prime (5181721) 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, 4224 + ... + 5310.

It is an arithmetic number, because the mean of its divisors is an integer number (496128).

Almost surely, 2^5181729 is an apocalyptic number.

It is an amenable number.

5181729 is a deficient number, since it is larger than the sum of its proper divisors (2756319).

5181729 is a wasteful number, since it uses less digits than its factorization.

5181729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its digits is 5040, while the sum is 33.

The square root of 5181729 is about 2276.3411431506. The cubic root of 5181729 is about 173.0446719926.

The spelling of 5181729 in words is "five million, one hundred eighty-one thousand, seven hundred twenty-nine".