454721 has 2 divisors, whose sum is σ = 454722. Its totient is φ = 454720.

The previous prime is 454711. The next prime is 454723. The reversal of 454721 is 127454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261121 + 193600 = 511^2 + 440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-454721 is a prime.

Together with 454723, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 454721.

It is not a weakly prime, because it can be changed into another prime (454723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227360 + 227361.

It is an arithmetic number, because the mean of its divisors is an integer number (227361).

2⁴⁵⁴⁷²¹ is an apocalyptic number.

It is an amenable number.

454721 is a deficient number, since it is larger than the sum of its proper divisors (1).

454721 is an equidigital number, since it uses as much as digits as its factorization.

454721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 23.

The square root of 454721 is about 674.3300378895. The cubic root of 454721 is about 76.8979927698.

The spelling of 454721 in words is "four hundred fifty-four thousand, seven hundred twenty-one".