55168720 has 40 divisors (see below), whose sum is σ = 133848576. Its totient is φ = 21107328.

The previous prime is 55168709. The next prime is 55168727. The reversal of 55168720 is 2786155.

55168720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55168727) 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 7 ways as a sum of consecutive naturals, for example, 13152 + ... + 16831.

Almost surely, 2^55168720 is an apocalyptic number.

It is an amenable number.

55168720 is an abundant number, since it is smaller than the sum of its proper divisors (78679856).

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

55168720 is a wasteful number, since it uses less digits than its factorization.

55168720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30019 (or 30013 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 55168720 is about 7427.5648768624. The cubic root of 55168720 is about 380.6837182913.

The spelling of 55168720 in words is "fifty-five million, one hundred sixty-eight thousand, seven hundred twenty".