4721305 has 4 divisors (see below), whose sum is σ = 5665572. Its totient is φ = 3777040.

The previous prime is 4721303. The next prime is 4721323. The reversal of 4721305 is 5031274.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1827904 + 2893401 = 1352^2 + 1701^2 .

It is not a de Polignac number, because 4721305 - 2¹ = 4721303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4721303) 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, 472126 + ... + 472135.

It is an arithmetic number, because the mean of its divisors is an integer number (1416393).

Almost surely, 2^4721305 is an apocalyptic number.

It is an amenable number.

4721305 is a deficient number, since it is larger than the sum of its proper divisors (944267).

4721305 is an equidigital number, since it uses as much as digits as its factorization.

4721305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944266.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 4721305 is about 2172.8564149524. The cubic root of 4721305 is about 167.7595885757.

Adding to 4721305 its reverse (5031274), we get a palindrome (9752579).

The spelling of 4721305 in words is "four million, seven hundred twenty-one thousand, three hundred five".