55803580 has 48 divisors (see below), whose sum is σ = 134668800. Its totient is φ = 19027008.

The previous prime is 55803547. The next prime is 55803619. The reversal of 55803580 is 8530855.

It is a super-3 number, since 3×55803580³ (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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26859 + ... + 28861.

It is an arithmetic number, because the mean of its divisors is an integer number (2805600).

Almost surely, 2^55803580 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 55803580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67334400).

55803580 is an abundant number, since it is smaller than the sum of its proper divisors (78865220).

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

55803580 is a wasteful number, since it uses less digits than its factorization.

55803580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 55803580 is about 7470.1793820497. The cubic root of 55803580 is about 382.1384054816.

The spelling of 55803580 in words is "fifty-five million, eight hundred three thousand, five hundred eighty".