144440522 has 4 divisors (see below), whose sum is σ = 216660786. Its totient is φ = 72220260.

The previous prime is 144440521. The next prime is 144440531. The reversal of 144440522 is 225044441.

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

It can be written as a sum of positive squares in only one way, i.e., 132043081 + 12397441 = 11491^2 + 3521^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144440491 and 144440500.

It is not an unprimeable number, because it can be changed into a prime (144440521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36110129 + ... + 36110132.

Almost surely, 2^144440522 is an apocalyptic number.

144440522 is a deficient number, since it is larger than the sum of its proper divisors (72220264).

144440522 is an equidigital number, since it uses as much as digits as its factorization.

144440522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72220263.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 144440522 is about 12018.3410668861. The cubic root of 144440522 is about 524.6822228086.

Adding to 144440522 its reverse (225044441), we get a palindrome (369484963).

The spelling of 144440522 in words is "one hundred forty-four million, four hundred forty thousand, five hundred twenty-two".