4713221 has 4 divisors (see below), whose sum is σ = 4718700. Its totient is φ = 4707744.

The previous prime is 4713179. The next prime is 4713227. The reversal of 4713221 is 1223174.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1223174 = 2 ⋅611587.

It can be written as a sum of positive squares in 2 ways, for example, as 1144900 + 3568321 = 1070^2 + 1889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4713221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4713193 and 4713202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4713227) 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, 1136 + ... + 3273.

It is an arithmetic number, because the mean of its divisors is an integer number (1179675).

Almost surely, 2^4713221 is an apocalyptic number.

It is an amenable number.

4713221 is a deficient number, since it is larger than the sum of its proper divisors (5479).

4713221 is a wasteful number, since it uses less digits than its factorization.

4713221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478.

The product of its digits is 336, while the sum is 20.

The square root of 4713221 is about 2170.9953938228. The cubic root of 4713221 is about 167.6637857359.

Adding to 4713221 its sum of digits (20), we get a square (4713241 = 2171²).

Adding to 4713221 its reverse (1223174), we get a palindrome (5936395).

The spelling of 4713221 in words is "four million, seven hundred thirteen thousand, two hundred twenty-one".