144444155 has 16 divisors (see below), whose sum is σ = 185431680. Its totient is φ = 107630592.

The previous prime is 144444149. The next prime is 144444173. The reversal of 144444155 is 551444441.

144444155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 144444155 - 2⁸ = 144443899 is a prime.

It is a super-2 number, since 2×144444155² = 41728227827328050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515 + ... + 17004.

It is an arithmetic number, because the mean of its divisors is an integer number (11589480).

Almost surely, 2^144444155 is an apocalyptic number.

144444155 is a deficient number, since it is larger than the sum of its proper divisors (40987525).

144444155 is a wasteful number, since it uses less digits than its factorization.

144444155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17638.

The product of its digits is 25600, while the sum is 32.

The square root of 144444155 is about 12018.4922099238. The cubic root of 144444155 is about 524.6866217463.

Adding to 144444155 its reverse (551444441), we get a palindrome (695888596).

The spelling of 144444155 in words is "one hundred forty-four million, four hundred forty-four thousand, one hundred fifty-five".