55540768 has 72 divisors (see below), whose sum is σ = 121657788. Its totient is φ = 24870912.

The previous prime is 55540763. The next prime is 55540769. The reversal of 55540768 is 86704555.

55540768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55532304 + 8464 = 7452^2 + 92^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55540768.

It is not an unprimeable number, because it can be changed into a prime (55540763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287680 + ... + 287872.

Almost surely, 2^55540768 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 55540768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60828894).

55540768 is an abundant number, since it is smaller than the sum of its proper divisors (66117020).

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

55540768 is a wasteful number, since it uses less digits than its factorization.

55540768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 55540768 is about 7452.5678795969. The cubic root of 55540768 is about 381.5375561293.

The spelling of 55540768 in words is "fifty-five million, five hundred forty thousand, seven hundred sixty-eight".