451321361 has 2 divisors, whose sum is σ = 451321362. Its totient is φ = 451321360.

The previous prime is 451321357. The next prime is 451321393. The reversal of 451321361 is 163123154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313962961 + 137358400 = 17719^2 + 11720^2 .

It is a cyclic number.

It is not a de Polignac number, because 451321361 - 2² = 451321357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 451321361.

It is not a weakly prime, because it can be changed into another prime (451321261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225660680 + 225660681.

It is an arithmetic number, because the mean of its divisors is an integer number (225660681).

Almost surely, 2^451321361 is an apocalyptic number.

It is an amenable number.

451321361 is a deficient number, since it is larger than the sum of its proper divisors (1).

451321361 is an equidigital number, since it uses as much as digits as its factorization.

451321361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 451321361 is about 21244.3253834995. The cubic root of 451321361 is about 767.0587523349.

The spelling of 451321361 in words is "four hundred fifty-one million, three hundred twenty-one thousand, three hundred sixty-one".