144533645 has 4 divisors (see below), whose sum is σ = 173440380. Its totient is φ = 115626912.

The previous prime is 144533639. The next prime is 144533671. The reversal of 144533645 is 546335441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48846121 + 95687524 = 6989^2 + 9782^2 .

It is a cyclic number.

It is not a de Polignac number, because 144533645 - 2⁴ = 144533629 is a prime.

It is a super-3 number, since 3×144533645³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 14453360 + ... + 14453369.

It is an arithmetic number, because the mean of its divisors is an integer number (43360095).

Almost surely, 2^144533645 is an apocalyptic number.

It is an amenable number.

144533645 is a deficient number, since it is larger than the sum of its proper divisors (28906735).

144533645 is an equidigital number, since it uses as much as digits as its factorization.

144533645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28906734.

The product of its digits is 86400, while the sum is 35.

The square root of 144533645 is about 12022.2146462289. The cubic root of 144533645 is about 524.7949554533.

The spelling of 144533645 in words is "one hundred forty-four million, five hundred thirty-three thousand, six hundred forty-five".