144584821 has 2 divisors, whose sum is σ = 144584822. Its totient is φ = 144584820.

The previous prime is 144584753. The next prime is 144584857. The reversal of 144584821 is 128485441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104325796 + 40259025 = 10214^2 + 6345^2 .

It is a cyclic number.

It is not a de Polignac number, because 144584821 - 2⁹ = 144584309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144584221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72292410 + 72292411.

It is an arithmetic number, because the mean of its divisors is an integer number (72292411).

Almost surely, 2^144584821 is an apocalyptic number.

It is an amenable number.

144584821 is a deficient number, since it is larger than the sum of its proper divisors (1).

144584821 is an equidigital number, since it uses as much as digits as its factorization.

144584821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40960, while the sum is 37.

The square root of 144584821 is about 12024.3428510667. The cubic root of 144584821 is about 524.8568873711.

The spelling of 144584821 in words is "one hundred forty-four million, five hundred eighty-four thousand, eight hundred twenty-one".