4516721 has 8 divisors (see below), whose sum is σ = 5097600. Its totient is φ = 3964240.

The previous prime is 4516711. The next prime is 4516727. The reversal of 4516721 is 1276154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4516721 - 2¹⁰ = 4515697 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4516727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6761 + ... + 7398.

It is an arithmetic number, because the mean of its divisors is an integer number (637200).

Almost surely, 2^4516721 is an apocalyptic number.

It is an amenable number.

4516721 is a deficient number, since it is larger than the sum of its proper divisors (580879).

4516721 is a wasteful number, since it uses less digits than its factorization.

4516721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14199.

The product of its digits is 1680, while the sum is 26.

The square root of 4516721 is about 2125.2578667070. The cubic root of 4516721 is about 165.3005968216.

The spelling of 4516721 in words is "four million, five hundred sixteen thousand, seven hundred twenty-one".