1055663280 has 600 divisors, whose sum is σ = 4559895648. Its totient is φ = 220962816.

The previous prime is 1055663267. The next prime is 1055663281. The reversal of 1055663280 is 823665501.

1055663280 is a `hidden beast` number, since 10 + 5 + 5 + 6 + 632 + 8 + 0 = 666.

1055663280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1055663280² = 2228849921480716800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1055663281) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 28531422 + ... + 28531458.

Almost surely, 2^1055663280 is an apocalyptic number.

1055663280 is a gapful number since it is divisible by the number (10) 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 1055663280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2279947824).

1055663280 is an abundant number, since it is smaller than the sum of its proper divisors (3504232368).

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

1055663280 is a wasteful number, since it uses less digits than its factorization.

1055663280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1055663280 is about 32490.9722846208. The cubic root of 1055663280 is about 1018.2204264310.

The spelling of 1055663280 in words is "one billion, fifty-five million, six hundred sixty-three thousand, two hundred eighty".