144422554 has 4 divisors (see below), whose sum is σ = 216633834. Its totient is φ = 72211276.

The previous prime is 144422539. The next prime is 144422561. The reversal of 144422554 is 455224441.

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., 91642329 + 52780225 = 9573^2 + 7265^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36105637 + ... + 36105640.

Almost surely, 2^144422554 is an apocalyptic number.

144422554 is a deficient number, since it is larger than the sum of its proper divisors (72211280).

144422554 is an equidigital number, since it uses as much as digits as its factorization.

144422554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72211279.

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

The square root of 144422554 is about 12017.5935195030. The cubic root of 144422554 is about 524.6604655691.

Adding to 144422554 its reverse (455224441), we get a palindrome (599646995).

The spelling of 144422554 in words is "one hundred forty-four million, four hundred twenty-two thousand, five hundred fifty-four".