144621593 has 2 divisors, whose sum is σ = 144621594. Its totient is φ = 144621592.

The previous prime is 144621583. The next prime is 144621611. The reversal of 144621593 is 395126441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125507209 + 19114384 = 11203^2 + 4372^2 .

It is a cyclic number.

It is not a de Polignac number, because 144621593 - 2¹⁶ = 144556057 is a prime.

It is not a weakly prime, because it can be changed into another prime (144621563) 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, 72310796 + 72310797.

It is an arithmetic number, because the mean of its divisors is an integer number (72310797).

Almost surely, 2^144621593 is an apocalyptic number.

It is an amenable number.

144621593 is a deficient number, since it is larger than the sum of its proper divisors (1).

144621593 is an equidigital number, since it uses as much as digits as its factorization.

144621593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 144621593 is about 12025.8718187082. The cubic root of 144621593 is about 524.9013789053.

The spelling of 144621593 in words is "one hundred forty-four million, six hundred twenty-one thousand, five hundred ninety-three".