55043712 has 80 divisors (see below), whose sum is σ = 163840050. Its totient is φ = 18344448.

The previous prime is 55043707. The next prime is 55043713. The reversal of 55043712 is 21734055.

It is a happy number.

55043712 is a `hidden beast` number, since 550 + 43 + 71 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54997056 + 46656 = 7416^2 + 216^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55043713) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7714 + ... + 13022.

Almost surely, 2^55043712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55043712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81920025).

55043712 is an abundant number, since it is smaller than the sum of its proper divisors (108796338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55043712 is an equidigital number, since it uses as much as digits as its factorization.

55043712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335 (or 5314 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55043712 is about 7419.1449642125. The cubic root of 55043712 is about 380.3959676751.

Adding to 55043712 its reverse (21734055), we get a palindrome (76777767).

It can be divided in two parts, 55043 and 712, that added together give a palindrome (55755).

The spelling of 55043712 in words is "fifty-five million, forty-three thousand, seven hundred twelve".