144446545 has 4 divisors (see below), whose sum is σ = 173335860. Its totient is φ = 115557232.

The previous prime is 144446543. The next prime is 144446551. The reversal of 144446545 is 545644441.

It is a happy number.

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 34762816 + 109683729 = 5896^2 + 10473^2 .

It is a cyclic number.

It is not a de Polignac number, because 144446545 - 2¹ = 144446543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144446543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14444650 + ... + 14444659.

It is an arithmetic number, because the mean of its divisors is an integer number (43333965).

Almost surely, 2^144446545 is an apocalyptic number.

It is an amenable number.

144446545 is a deficient number, since it is larger than the sum of its proper divisors (28889315).

144446545 is an equidigital number, since it uses as much as digits as its factorization.

144446545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28889314.

The product of its digits is 153600, while the sum is 37.

The square root of 144446545 is about 12018.5916396223. The cubic root of 144446545 is about 524.6895155846.

It can be divided in two parts, 144446 and 545, that added together give a triangular number (144991 = T₅₃₈).

The spelling of 144446545 in words is "one hundred forty-four million, four hundred forty-six thousand, five hundred forty-five".