453401021 has 2 divisors, whose sum is σ = 453401022. Its totient is φ = 453401020.

The previous prime is 453400949. The next prime is 453401027. The reversal of 453401021 is 120104354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450033796 + 3367225 = 21214^2 + 1835^2 .

It is a cyclic number.

It is not a de Polignac number, because 453401021 - 2¹⁸ = 453138877 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 453400984 and 453401002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (453401027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226700510 + 226700511.

It is an arithmetic number, because the mean of its divisors is an integer number (226700511).

Almost surely, 2^453401021 is an apocalyptic number.

It is an amenable number.

453401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

453401021 is an equidigital number, since it uses as much as digits as its factorization.

453401021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 453401021 is about 21293.2153748559. The cubic root of 453401021 is about 768.2351331947.

Adding to 453401021 its reverse (120104354), we get a palindrome (573505375).

The spelling of 453401021 in words is "four hundred fifty-three million, four hundred one thousand, twenty-one".