1055561280 has 112 divisors (see below), whose sum is σ = 3548603520. Its totient is φ = 264921088.

The previous prime is 1055561261. The next prime is 1055561281. The reversal of 1055561280 is 821655501.

1055561280 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 2×1055561280² = 2228419231670476800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055561281) 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, 16020 + ... + 48659.

It is an arithmetic number, because the mean of its divisors is an integer number (31683960).

Almost surely, 2^1055561280 is an apocalyptic number.

1055561280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055561280 is an abundant number, since it is smaller than the sum of its proper divisors (2493042240).

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

1055561280 is a wasteful number, since it uses less digits than its factorization.

1055561280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64716 (or 64706 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 1055561280 is about 32489.4025799183. The cubic root of 1055561280 is about 1018.1876313057.

The spelling of 1055561280 in words is "one billion, fifty-five million, five hundred sixty-one thousand, two hundred eighty".