55380724 has 24 divisors (see below), whose sum is σ = 111863808. Its totient is φ = 23498400.

The previous prime is 55380701. The next prime is 55380761. The reversal of 55380724 is 42708355.

It is a happy number.

55380724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55380724.

It is a congruent number.

It is an unprimeable number.

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, 6964 + ... + 12619.

It is an arithmetic number, because the mean of its divisors is an integer number (4660992).

Almost surely, 2^55380724 is an apocalyptic number.

It is an amenable number.

55380724 is an abundant number, since it is smaller than the sum of its proper divisors (56483084).

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

55380724 is a wasteful number, since it uses less digits than its factorization.

55380724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19695 (or 19693 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 55380724 is about 7441.8226262119. The cubic root of 55380724 is about 381.1707292324.

The spelling of 55380724 in words is "fifty-five million, three hundred eighty thousand, seven hundred twenty-four".