5731729 has 2 divisors, whose sum is σ = 5731730. Its totient is φ = 5731728.

The previous prime is 5731723. The next prime is 5731757. The reversal of 5731729 is 9271375.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3097600 + 2634129 = 1760^2 + 1623^2 .

It is a cyclic number.

It is not a de Polignac number, because 5731729 - 2¹⁷ = 5600657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5731694 and 5731703.

It is not a weakly prime, because it can be changed into another prime (5731723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2865864 + 2865865.

It is an arithmetic number, because the mean of its divisors is an integer number (2865865).

Almost surely, 2^5731729 is an apocalyptic number.

It is an amenable number.

5731729 is a deficient number, since it is larger than the sum of its proper divisors (1).

5731729 is an equidigital number, since it uses as much as digits as its factorization.

5731729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 34.

The square root of 5731729 is about 2394.1029635335. The cubic root of 5731729 is about 178.9624360696.

The spelling of 5731729 in words is "five million, seven hundred thirty-one thousand, seven hundred twenty-nine".