451468421 has 2 divisors, whose sum is σ = 451468422. Its totient is φ = 451468420.

The previous prime is 451468411. The next prime is 451468441. The reversal of 451468421 is 124864154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400560196 + 50908225 = 20014^2 + 7135^2 .

It is a cyclic number.

It is not a de Polignac number, because 451468421 - 2¹⁰ = 451467397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451468411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225734210 + 225734211.

It is an arithmetic number, because the mean of its divisors is an integer number (225734211).

Almost surely, 2^451468421 is an apocalyptic number.

It is an amenable number.

451468421 is a deficient number, since it is larger than the sum of its proper divisors (1).

451468421 is an equidigital number, since it uses as much as digits as its factorization.

451468421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 35.

The square root of 451468421 is about 21247.7862611614. The cubic root of 451468421 is about 767.1420569157.

The spelling of 451468421 in words is "four hundred fifty-one million, four hundred sixty-eight thousand, four hundred twenty-one".