254444454521 has 2 divisors, whose sum is σ = 254444454522. Its totient is φ = 254444454520.

The previous prime is 254444454479. The next prime is 254444454557. The reversal of 254444454521 is 125454444452.

254444454521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160829873296 + 93614581225 = 401036^2 + 305965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254444454521 is a prime.

It is not a weakly prime, because it can be changed into another prime (254444054521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127222227260 + 127222227261.

It is an arithmetic number, because the mean of its divisors is an integer number (127222227261).

Almost surely, 2^254444454521 is an apocalyptic number.

It is an amenable number.

254444454521 is a deficient number, since it is larger than the sum of its proper divisors (1).

254444454521 is an equidigital number, since it uses as much as digits as its factorization.

254444454521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048000, while the sum is 44.

Adding to 254444454521 its reverse (125454444452), we get a palindrome (379898898973).

The spelling of 254444454521 in words is "two hundred fifty-four billion, four hundred forty-four million, four hundred fifty-four thousand, five hundred twenty-one".