144666533 has 4 divisors (see below), whose sum is σ = 157818048. Its totient is φ = 131515020.

The previous prime is 144666503. The next prime is 144666539. The reversal of 144666533 is 335666441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335666441 = 11 ⋅30515131.

It is a cyclic number.

It is not a de Polignac number, because 144666533 - 2⁶ = 144666469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144666539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6575741 + ... + 6575762.

It is an arithmetic number, because the mean of its divisors is an integer number (39454512).

Almost surely, 2^144666533 is an apocalyptic number.

It is an amenable number.

144666533 is a deficient number, since it is larger than the sum of its proper divisors (13151515).

144666533 is a wasteful number, since it uses less digits than its factorization.

144666533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13151514.

The product of its digits is 155520, while the sum is 38.

The square root of 144666533 is about 12027.7401451811. The cubic root of 144666533 is about 524.9557429057.

The spelling of 144666533 in words is "one hundred forty-four million, six hundred sixty-six thousand, five hundred thirty-three".