451921453 has 2 divisors, whose sum is σ = 451921454. Its totient is φ = 451921452.

The previous prime is 451921433. The next prime is 451921469. The reversal of 451921453 is 354129154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 349951849 + 101969604 = 18707^2 + 10098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451921453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451921433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225960726 + 225960727.

It is an arithmetic number, because the mean of its divisors is an integer number (225960727).

Almost surely, 2^451921453 is an apocalyptic number.

It is an amenable number.

451921453 is a deficient number, since it is larger than the sum of its proper divisors (1).

451921453 is an equidigital number, since it uses as much as digits as its factorization.

451921453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The square root of 451921453 is about 21258.4442751580. Note that the first 3 decimals coincide. The cubic root of 451921453 is about 767.3985707721.

The spelling of 451921453 in words is "four hundred fifty-one million, nine hundred twenty-one thousand, four hundred fifty-three".