454511021 has 2 divisors, whose sum is σ = 454511022. Its totient is φ = 454511020.

The previous prime is 454511011. The next prime is 454511033. The reversal of 454511021 is 120115454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316448521 + 138062500 = 17789^2 + 11750^2 .

It is a cyclic number.

It is not a de Polignac number, because 454511021 - 2¹⁸ = 454248877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454511011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227255510 + 227255511.

It is an arithmetic number, because the mean of its divisors is an integer number (227255511).

Almost surely, 2^454511021 is an apocalyptic number.

It is an amenable number.

454511021 is a deficient number, since it is larger than the sum of its proper divisors (1).

454511021 is an equidigital number, since it uses as much as digits as its factorization.

454511021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 454511021 is about 21319.2640820456. The cubic root of 454511021 is about 768.8615441202.

Adding to 454511021 its reverse (120115454), we get a palindrome (574626475).

The spelling of 454511021 in words is "four hundred fifty-four million, five hundred eleven thousand, twenty-one".