55755580 has 24 divisors (see below), whose sum is σ = 123974928. Its totient is φ = 20990208.

The previous prime is 55755551. The next prime is 55755589. The reversal of 55755580 is 8555755.

55755580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×55755580³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55755589) 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, 81654 + ... + 82333.

It is an arithmetic number, because the mean of its divisors is an integer number (5165622).

Almost surely, 2^55755580 is an apocalyptic number.

It is an amenable number.

55755580 is an abundant number, since it is smaller than the sum of its proper divisors (68219348).

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

55755580 is a wasteful number, since it uses less digits than its factorization.

55755580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164013 (or 164011 counting only the distinct ones).

The product of its (nonzero) digits is 175000, while the sum is 40.

The square root of 55755580 is about 7466.9659166224. The cubic root of 55755580 is about 382.0288073448.

The spelling of 55755580 in words is "fifty-five million, seven hundred fifty-five thousand, five hundred eighty".