454030021 has 2 divisors, whose sum is σ = 454030022. Its totient is φ = 454030020.

The previous prime is 454030001. The next prime is 454030039. The reversal of 454030021 is 120030454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 448804225 + 5225796 = 21185^2 + 2286^2 .

It is a cyclic number.

It is not a de Polignac number, because 454030021 - 2¹⁹ = 453505733 is a prime.

It is a super-2 number, since 2×454030021² = 412286519938520882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454030001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227015010 + 227015011.

It is an arithmetic number, because the mean of its divisors is an integer number (227015011).

Almost surely, 2^454030021 is an apocalyptic number.

It is an amenable number.

454030021 is a deficient number, since it is larger than the sum of its proper divisors (1).

454030021 is an equidigital number, since it uses as much as digits as its factorization.

454030021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 454030021 is about 21307.9802186880. The cubic root of 454030021 is about 768.5902247455.

Adding to 454030021 its reverse (120030454), we get a palindrome (574060475).

The spelling of 454030021 in words is "four hundred fifty-four million, thirty thousand, twenty-one".