55816144 has 20 divisors (see below), whose sum is σ = 108376000. Its totient is φ = 27848160.

The previous prime is 55816141. The next prime is 55816157. The reversal of 55816144 is 44161855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55816141) 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, 4489 + ... + 11479.

It is an arithmetic number, because the mean of its divisors is an integer number (5418800).

Almost surely, 2^55816144 is an apocalyptic number.

It is an amenable number.

55816144 is a deficient number, since it is larger than the sum of its proper divisors (52559856).

55816144 is a wasteful number, since it uses less digits than its factorization.

55816144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498 (or 7492 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 55816144 is about 7471.0202783823. The cubic root of 55816144 is about 382.1670824150.

Adding to 55816144 its reverse (44161855), we get a palindrome (99977999).

The spelling of 55816144 in words is "fifty-five million, eight hundred sixteen thousand, one hundred forty-four".