4452401021 has 2 divisors, whose sum is σ = 4452401022. Its totient is φ = 4452401020.

The previous prime is 4452400969. The next prime is 4452401047. The reversal of 4452401021 is 1201042544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4433695396 + 18705625 = 66586^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 4452401021 - 2¹⁴ = 4452384637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4452401221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2226200510 + 2226200511.

It is an arithmetic number, because the mean of its divisors is an integer number (2226200511).

Almost surely, 2^4452401021 is an apocalyptic number.

It is an amenable number.

4452401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4452401021 is an equidigital number, since it uses as much as digits as its factorization.

4452401021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 4452401021 is about 66726.3143070258. The cubic root of 4452401021 is about 1645.1219282443.

Adding to 4452401021 its reverse (1201042544), we get a palindrome (5653443565).

The spelling of 4452401021 in words is "four billion, four hundred fifty-two million, four hundred one thousand, twenty-one".