144455345 has 4 divisors (see below), whose sum is σ = 173346420. Its totient is φ = 115564272.

The previous prime is 144455329. The next prime is 144455357. The reversal of 144455345 is 543554441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543554441 = 15601 ⋅34841.

It can be written as a sum of positive squares in 2 ways, for example, as 58262689 + 86192656 = 7633^2 + 9284^2 .

It is a cyclic number.

It is not a de Polignac number, because 144455345 - 2⁴ = 144455329 is a prime.

It is a Curzon 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, 14445530 + ... + 14445539.

It is an arithmetic number, because the mean of its divisors is an integer number (43336605).

Almost surely, 2^144455345 is an apocalyptic number.

It is an amenable number.

144455345 is a deficient number, since it is larger than the sum of its proper divisors (28891075).

144455345 is an equidigital number, since it uses as much as digits as its factorization.

144455345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28891074.

The product of its digits is 96000, while the sum is 35.

The square root of 144455345 is about 12018.9577335142. The cubic root of 144455345 is about 524.7001704465.

The spelling of 144455345 in words is "one hundred forty-four million, four hundred fifty-five thousand, three hundred forty-five".