2755555280 has 80 divisors (see below), whose sum is σ = 6642432000. Its totient is φ = 1061975040.

The previous prime is 2755555247. The next prime is 2755555303. The reversal of 2755555280 is 825555572.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2755555280² = 15186169802271756800, which contains 22 as substring.

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, 590396 + ... + 595044.

It is an arithmetic number, because the mean of its divisors is an integer number (83030400).

Almost surely, 2^2755555280 is an apocalyptic number.

2755555280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2755555280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3321216000).

2755555280 is an abundant number, since it is smaller than the sum of its proper divisors (3886876720).

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

2755555280 is a wasteful number, since it uses less digits than its factorization.

2755555280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932 (or 4926 counting only the distinct ones).

The product of its (nonzero) digits is 700000, while the sum is 44.

The square root of 2755555280 is about 52493.3832020760. The cubic root of 2755555280 is about 1401.9624315755.

It can be divided in two parts, 275 and 5555280, that added together give a palindrome (5555555).

The spelling of 2755555280 in words is "two billion, seven hundred fifty-five million, five hundred fifty-five thousand, two hundred eighty".