55112144 has 20 divisors (see below), whose sum is σ = 107762820. Its totient is φ = 27302400.

The previous prime is 55112143. The next prime is 55112149. The reversal of 55112144 is 44121155.

It can be written as a sum of positive squares in 2 ways, for example, as 45427600 + 9684544 = 6740^2 + 3112^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55112143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14057 + ... + 17544.

It is an arithmetic number, because the mean of its divisors is an integer number (5388141).

Almost surely, 2^55112144 is an apocalyptic number.

It is an amenable number.

55112144 is a deficient number, since it is larger than the sum of its proper divisors (52650676).

55112144 is a wasteful number, since it uses less digits than its factorization.

55112144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31718 (or 31712 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 55112144 is about 7423.7553839011. The cubic root of 55112144 is about 380.5535422993.

Adding to 55112144 its reverse (44121155), we get a palindrome (99233299).

The spelling of 55112144 in words is "fifty-five million, one hundred twelve thousand, one hundred forty-four".