55844880 has 160 divisors (see below), whose sum is σ = 213153024. Its totient is φ = 11778048.

The previous prime is 55844879. The next prime is 55844891. The reversal of 55844880 is 8844855.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20562 + ... + 23118.

Almost surely, 2^55844880 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 55844880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106576512).

55844880 is an abundant number, since it is smaller than the sum of its proper divisors (157308144).

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

55844880 is a wasteful number, since it uses less digits than its factorization.

55844880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593 (or 2587 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 42.

The square root of 55844880 is about 7472.9431952879. The cubic root of 55844880 is about 382.2326552548.

The spelling of 55844880 in words is "fifty-five million, eight hundred forty-four thousand, eight hundred eighty".