1453405321 has 2 divisors, whose sum is σ = 1453405322. Its totient is φ = 1453405320.

The previous prime is 1453405313. The next prime is 1453405391. The reversal of 1453405321 is 1235043541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1117966096 + 335439225 = 33436^2 + 18315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1453405321 - 2³ = 1453405313 is a prime.

It is a super-2 number, since 2×1453405321² = 4224774054222226082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1453405321.

It is not a weakly prime, because it can be changed into another prime (1453405391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 726702660 + 726702661.

It is an arithmetic number, because the mean of its divisors is an integer number (726702661).

Almost surely, 2^1453405321 is an apocalyptic number.

It is an amenable number.

1453405321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1453405321 is an equidigital number, since it uses as much as digits as its factorization.

1453405321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1453405321 is about 38123.5533627179. The cubic root of 1453405321 is about 1132.7365530418.

Adding to 1453405321 its reverse (1235043541), we get a palindrome (2688448862).

The spelling of 1453405321 in words is "one billion, four hundred fifty-three million, four hundred five thousand, three hundred twenty-one".