144442455 has 16 divisors (see below), whose sum is σ = 244702944. Its totient is φ = 72504320.

The previous prime is 144442451. The next prime is 144442457. The reversal of 144442455 is 554244441.

It is not a de Polignac number, because 144442455 - 2² = 144442451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144442451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282966 + ... + 283475.

It is an arithmetic number, because the mean of its divisors is an integer number (15293934).

Almost surely, 2^144442455 is an apocalyptic number.

144442455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

144442455 is a deficient number, since it is larger than the sum of its proper divisors (100260489).

144442455 is a wasteful number, since it uses less digits than its factorization.

144442455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566466.

The product of its digits is 51200, while the sum is 33.

The square root of 144442455 is about 12018.4214853699. The cubic root of 144442455 is about 524.6845633481.

Adding to 144442455 its reverse (554244441), we get a palindrome (698686896).

The spelling of 144442455 in words is "one hundred forty-four million, four hundred forty-two thousand, four hundred fifty-five".