472721 has 2 divisors, whose sum is σ = 472722. Its totient is φ = 472720.

The previous prime is 472711. The next prime is 472741. The reversal of 472721 is 127274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261121 + 211600 = 511^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 472721 - 2¹⁰ = 471697 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is equal to p₃₉₄₄₃ and since 472721 and 39443 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (472711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236360 + 236361.

It is an arithmetic number, because the mean of its divisors is an integer number (236361).

2⁴⁷²⁷²¹ is an apocalyptic number.

It is an amenable number.

472721 is a deficient number, since it is larger than the sum of its proper divisors (1).

472721 is an equidigital number, since it uses as much as digits as its factorization.

472721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 23.

The square root of 472721 is about 687.5470892964. The cubic root of 472721 is about 77.8995529281.

Adding to 472721 its reverse (127274), we get a palindrome (599995).

The spelling of 472721 in words is "four hundred seventy-two thousand, seven hundred twenty-one", and thus it is an iban number.