55144444 has 6 divisors (see below), whose sum is σ = 96502784. Its totient is φ = 27572220.

The previous prime is 55144423. The next prime is 55144469. The reversal of 55144444 is 44444155.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6893052 + ... + 6893059.

Almost surely, 2^55144444 is an apocalyptic number.

It is an amenable number.

55144444 is a deficient number, since it is larger than the sum of its proper divisors (41358340).

55144444 is a wasteful number, since it uses less digits than its factorization.

55144444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13786115 (or 13786113 counting only the distinct ones).

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

The square root of 55144444 is about 7425.9305140837. The cubic root of 55144444 is about 380.6278724316.

Adding to 55144444 its reverse (44444155), we get a palindrome (99588599).

The spelling of 55144444 in words is "fifty-five million, one hundred forty-four thousand, four hundred forty-four".