5721729 has 16 divisors (see below), whose sum is σ = 8500800. Its totient is φ = 3398976.

The previous prime is 5721719. The next prime is 5721743. The reversal of 5721729 is 9271275.

It is not a de Polignac number, because 5721729 - 2⁴ = 5721713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5721729.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1399 + ... + 3660.

It is an arithmetic number, because the mean of its divisors is an integer number (531300).

Almost surely, 2^5721729 is an apocalyptic number.

It is an amenable number.

5721729 is a deficient number, since it is larger than the sum of its proper divisors (2779071).

5721729 is a wasteful number, since it uses less digits than its factorization.

5721729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104.

The product of its digits is 8820, while the sum is 33.

The square root of 5721729 is about 2392.0135869179. The cubic root of 5721729 is about 178.8582984327.

The spelling of 5721729 in words is "five million, seven hundred twenty-one thousand, seven hundred twenty-nine".