55855860 has 24 divisors (see below), whose sum is σ = 156396576. Its totient is φ = 14894880.

The previous prime is 55855853. The next prime is 55855861. The reversal of 55855860 is 6855855.

55855860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55855861) 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, 465406 + ... + 465525.

It is an arithmetic number, because the mean of its divisors is an integer number (6516524).

Almost surely, 2^55855860 is an apocalyptic number.

It is an amenable number.

55855860 is an abundant number, since it is smaller than the sum of its proper divisors (100540716).

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

55855860 is a wasteful number, since it uses less digits than its factorization.

55855860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930943 (or 930941 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 42.

The square root of 55855860 is about 7473.6778094858. The cubic root of 55855860 is about 382.2577046387.

The spelling of 55855860 in words is "fifty-five million, eight hundred fifty-five thousand, eight hundred sixty".