555280 has 40 divisors (see below), whose sum is σ = 1410624. Its totient is φ = 201600.

The previous prime is 555277. The next prime is 555287. The reversal of 555280 is 82555.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (555287) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 565 + ... + 1195.

2⁵⁵⁵²⁸⁰ 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 555280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705312).

555280 is an abundant number, since it is smaller than the sum of its proper divisors (855344).

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

555280 is a wasteful number, since it uses less digits than its factorization.

555280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 555280 is about 745.1711212869. The cubic root of 555280 is about 82.1934753278.

It can be divided in two parts, 55 and 5280, that added together give a palindrome (5335).

The spelling of 555280 in words is "five hundred fifty-five thousand, two hundred eighty".