5721329 has 4 divisors (see below), whose sum is σ = 5905920. Its totient is φ = 5536740.

The previous prime is 5721307. The next prime is 5721343. The reversal of 5721329 is 9231275.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5721329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5721349) 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 in 3 ways as a sum of consecutive naturals, for example, 92249 + ... + 92310.

It is an arithmetic number, because the mean of its divisors is an integer number (1476480).

Almost surely, 2^5721329 is an apocalyptic number.

It is an amenable number.

5721329 is a deficient number, since it is larger than the sum of its proper divisors (184591).

5721329 is a wasteful number, since it uses less digits than its factorization.

5721329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184590.

The product of its digits is 3780, while the sum is 29.

The square root of 5721329 is about 2391.9299738914. The cubic root of 5721329 is about 178.8541304043.

The spelling of 5721329 in words is "five million, seven hundred twenty-one thousand, three hundred twenty-nine".