144252445 has 4 divisors (see below), whose sum is σ = 173102940. Its totient is φ = 115401952.

The previous prime is 144252439. The next prime is 144252533. The reversal of 144252445 is 544252441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544252441 = 21269 ⋅25589.

It can be written as a sum of positive squares in 2 ways, for example, as 100520676 + 43731769 = 10026^2 + 6613^2 .

It is a cyclic number.

It is not a de Polignac number, because 144252445 - 2¹³ = 144244253 is a prime.

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, 14425240 + ... + 14425249.

It is an arithmetic number, because the mean of its divisors is an integer number (43275735).

Almost surely, 2^144252445 is an apocalyptic number.

It is an amenable number.

144252445 is a deficient number, since it is larger than the sum of its proper divisors (28850495).

144252445 is an equidigital number, since it uses as much as digits as its factorization.

144252445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28850494.

The product of its digits is 25600, while the sum is 31.

The square root of 144252445 is about 12010.5139357148. The cubic root of 144252445 is about 524.4543931133.

The spelling of 144252445 in words is "one hundred forty-four million, two hundred fifty-two thousand, four hundred forty-five".