5947721 has 4 divisors (see below), whose sum is σ = 6405252. Its totient is φ = 5490192.

The previous prime is 5947699. The next prime is 5947723. The reversal of 5947721 is 1277495.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1277495 = 5 ⋅255499.

It can be written as a sum of positive squares in 2 ways, for example, as 657721 + 5290000 = 811^2 + 2300^2 .

It is a cyclic number.

It is not a de Polignac number, because 5947721 - 2¹⁰ = 5946697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5947723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228746 + ... + 228771.

It is an arithmetic number, because the mean of its divisors is an integer number (1601313).

Almost surely, 2^5947721 is an apocalyptic number.

It is an amenable number.

5947721 is a deficient number, since it is larger than the sum of its proper divisors (457531).

5947721 is a wasteful number, since it uses less digits than its factorization.

5947721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457530.

The product of its digits is 17640, while the sum is 35.

The square root of 5947721 is about 2438.7949893339. The cubic root of 5947721 is about 181.1827565065.

The spelling of 5947721 in words is "five million, nine hundred forty-seven thousand, seven hundred twenty-one".