5565257280 has 560 divisors, whose sum is σ = 21907195200. Its totient is φ = 1329868800.

The previous prime is 5565257249. The next prime is 5565257287. The reversal of 5565257280 is 827525655.

5565257280 is a `hidden beast` number, since 5 + 56 + 525 + 72 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (5565257287) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 37350646 + ... + 37350794.

Almost surely, 2^5565257280 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 5565257280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10953597600).

5565257280 is an abundant number, since it is smaller than the sum of its proper divisors (16341937920).

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

5565257280 is a wasteful number, since it uses less digits than its factorization.

5565257280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The square root of 5565257280 is about 74600.6520078746. The cubic root of 5565257280 is about 1772.1279778210.

The spelling of 5565257280 in words is "five billion, five hundred sixty-five million, two hundred fifty-seven thousand, two hundred eighty".