4717221 has 4 divisors (see below), whose sum is σ = 6289632. Its totient is φ = 3144812.

The previous prime is 4717217. The next prime is 4717247. The reversal of 4717221 is 1227174.

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 not a de Polignac number, because 4717221 - 2² = 4717217 is a prime.

It is a D-number.

4717221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4717191 and 4717200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4717021) 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, 786201 + ... + 786206.

It is an arithmetic number, because the mean of its divisors is an integer number (1572408).

Almost surely, 2^4717221 is an apocalyptic number.

It is an amenable number.

4717221 is a deficient number, since it is larger than the sum of its proper divisors (1572411).

4717221 is a wasteful number, since it uses less digits than its factorization.

4717221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572410.

The product of its digits is 784, while the sum is 24.

The square root of 4717221 is about 2171.9164348566. The cubic root of 4717221 is about 167.7112030972.

The spelling of 4717221 in words is "four million, seven hundred seventeen thousand, two hundred twenty-one".