55851880 has 64 divisors (see below), whose sum is σ = 144679680. Its totient is φ = 19008000.

The previous prime is 55851871. The next prime is 55851893. The reversal of 55851880 is 8815855.

55851880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 15 ways as a sum of consecutive naturals, for example, 41620 + ... + 42940.

It is an arithmetic number, because the mean of its divisors is an integer number (2260620).

Almost surely, 2^55851880 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 55851880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72339840).

55851880 is an abundant number, since it is smaller than the sum of its proper divisors (88827800).

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

55851880 is a wasteful number, since it uses less digits than its factorization.

55851880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 40.

The square root of 55851880 is about 7473.4115369087. The cubic root of 55851880 is about 382.2486251867.

The spelling of 55851880 in words is "fifty-five million, eight hundred fifty-one thousand, eight hundred eighty".