55723144 has 16 divisors (see below), whose sum is σ = 110627100. Its totient is φ = 26222592.

The previous prime is 55723091. The next prime is 55723159. The reversal of 55723144 is 44132755.

It can be written as a sum of positive squares in 2 ways, for example, as 53846244 + 1876900 = 7338^2 + 1370^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204729 + ... + 205000.

Almost surely, 2^55723144 is an apocalyptic number.

It is an amenable number.

55723144 is a deficient number, since it is larger than the sum of its proper divisors (54903956).

55723144 is a wasteful number, since it uses less digits than its factorization.

55723144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409752 (or 409748 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 55723144 is about 7464.7936341201. The cubic root of 55723144 is about 381.9547107844.

Adding to 55723144 its reverse (44132755), we get a palindrome (99855899).

The spelling of 55723144 in words is "fifty-five million, seven hundred twenty-three thousand, one hundred forty-four".