5721747 has 4 divisors (see below), whose sum is σ = 7629000. Its totient is φ = 3814496.

The previous prime is 5721743. The next prime is 5721757. The reversal of 5721747 is 7471275.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5721747 - 2² = 5721743 is a prime.

It is a D-number.

5721747 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5721743) 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, 953622 + ... + 953627.

It is an arithmetic number, because the mean of its divisors is an integer number (1907250).

Almost surely, 2^5721747 is an apocalyptic number.

5721747 is a deficient number, since it is larger than the sum of its proper divisors (1907253).

5721747 is a wasteful number, since it uses less digits than its factorization.

5721747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907252.

The product of its digits is 13720, while the sum is 33.

The square root of 5721747 is about 2392.0173494354. The cubic root of 5721747 is about 178.8584859894.

The spelling of 5721747 in words is "five million, seven hundred twenty-one thousand, seven hundred forty-seven".