144446521 has 2 divisors, whose sum is σ = 144446522. Its totient is φ = 144446520.

The previous prime is 144446413. The next prime is 144446527. The reversal of 144446521 is 125644441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113209600 + 31236921 = 10640^2 + 5589^2 .

It is a cyclic number.

It is not a de Polignac number, because 144446521 - 2⁹ = 144446009 is a prime.

It is not a weakly prime, because it can be changed into another prime (144446527) 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, 72223260 + 72223261.

It is an arithmetic number, because the mean of its divisors is an integer number (72223261).

Almost surely, 2^144446521 is an apocalyptic number.

It is an amenable number.

144446521 is a deficient number, since it is larger than the sum of its proper divisors (1).

144446521 is an equidigital number, since it uses as much as digits as its factorization.

144446521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 31.

The square root of 144446521 is about 12018.5906411692. The cubic root of 144446521 is about 524.6894865253.

The spelling of 144446521 in words is "one hundred forty-four million, four hundred forty-six thousand, five hundred twenty-one".