555055280 has 80 divisors (see below), whose sum is σ = 1409534784. Its totient is φ = 202030080.

The previous prime is 555055231. The next prime is 555055283. The reversal of 555055280 is 82550555.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 555055280.

It is not an unprimeable number, because it can be changed into a prime (555055283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70082 + ... + 77598.

Almost surely, 2^555055280 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 555055280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704767392).

555055280 is an abundant number, since it is smaller than the sum of its proper divisors (854479504).

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

555055280 is a wasteful number, since it uses less digits than its factorization.

555055280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7614 (or 7608 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The square root of 555055280 is about 23559.6112022249. The cubic root of 555055280 is about 821.8238602154.

The spelling of 555055280 in words is "five hundred fifty-five million, fifty-five thousand, two hundred eighty".