144474821 has 2 divisors, whose sum is σ = 144474822. Its totient is φ = 144474820.

The previous prime is 144474809. The next prime is 144474829. The reversal of 144474821 is 128474441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110544196 + 33930625 = 10514^2 + 5825^2 .

It is an emirp because it is prime and its reverse (128474441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144474821 - 2¹⁴ = 144458437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144474829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72237410 + 72237411.

It is an arithmetic number, because the mean of its divisors is an integer number (72237411).

Almost surely, 2^144474821 is an apocalyptic number.

It is an amenable number.

144474821 is a deficient number, since it is larger than the sum of its proper divisors (1).

144474821 is an equidigital number, since it uses as much as digits as its factorization.

144474821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28672, while the sum is 35.

The square root of 144474821 is about 12019.7679262122. The cubic root of 144474821 is about 524.7237500547.

The spelling of 144474821 in words is "one hundred forty-four million, four hundred seventy-four thousand, eight hundred twenty-one".