55982580 has 48 divisors (see below), whose sum is σ = 158383680. Its totient is φ = 14773248.

The previous prime is 55982579. The next prime is 55982599. The reversal of 55982580 is 8528955.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011 + ... + 10629.

It is an arithmetic number, because the mean of its divisors is an integer number (3299660).

Almost surely, 2^55982580 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 55982580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79191840).

55982580 is an abundant number, since it is smaller than the sum of its proper divisors (102401100).

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

55982580 is a wasteful number, since it uses less digits than its factorization.

55982580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9728 (or 9726 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 55982580 is about 7482.1507603095. The cubic root of 55982580 is about 382.5465618913.

The spelling of 55982580 in words is "fifty-five million, nine hundred eighty-two thousand, five hundred eighty".