454404051421 has 2 divisors, whose sum is σ = 454404051422. Its totient is φ = 454404051420.

The previous prime is 454404051379. The next prime is 454404051511. The reversal of 454404051421 is 124150404454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328369111225 + 126034940196 = 573035^2 + 355014^2 .

It is a cyclic number.

It is not a de Polignac number, because 454404051421 - 2¹¹ = 454404049373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454404051121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227202025710 + 227202025711.

It is an arithmetic number, because the mean of its divisors is an integer number (227202025711).

Almost surely, 2^454404051421 is an apocalyptic number.

It is an amenable number.

454404051421 is a deficient number, since it is larger than the sum of its proper divisors (1).

454404051421 is an equidigital number, since it uses as much as digits as its factorization.

454404051421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 454404051421 its reverse (124150404454), we get a palindrome (578554455875).

The spelling of 454404051421 in words is "four hundred fifty-four billion, four hundred four million, fifty-one thousand, four hundred twenty-one".