144320552 has 8 divisors (see below), whose sum is σ = 270601050. Its totient is φ = 72160272.

The previous prime is 144320521. The next prime is 144320569. The reversal of 144320552 is 255023441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 135163876 + 9156676 = 11626^2 + 3026^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9020027 + ... + 9020042.

Almost surely, 2^144320552 is an apocalyptic number.

It is an amenable number.

144320552 is a deficient number, since it is larger than the sum of its proper divisors (126280498).

144320552 is a wasteful number, since it uses less digits than its factorization.

144320552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18040075 (or 18040071 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 144320552 is about 12013.3489086100. The cubic root of 144320552 is about 524.5369183359.

Adding to 144320552 its reverse (255023441), we get a palindrome (399343993).

The spelling of 144320552 in words is "one hundred forty-four million, three hundred twenty thousand, five hundred fifty-two".