1055556100 has 18 divisors (see below), whose sum is σ = 2290556954. Its totient is φ = 422222400.

The previous prime is 1055556097. The next prime is 1055556101. The reversal of 1055556100 is 16555501.

It can be written as a sum of positive squares in 3 ways, for example, as 249450436 + 806105664 = 15794^2 + 28392^2 .

It is a super-2 number, since 2×1055556100² = 2228397360494420000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055556101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5277681 + ... + 5277880.

Almost surely, 2^1055556100 is an apocalyptic number.

1055556100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055556100 is an abundant number, since it is smaller than the sum of its proper divisors (1235000854).

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

1055556100 is a wasteful number, since it uses less digits than its factorization.

1055556100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10555575 (or 10555568 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1055556100 is about 32489.3228615187. The cubic root of 1055556100 is about 1018.1859657714.

The spelling of 1055556100 in words is "one billion, fifty-five million, five hundred fifty-six thousand, one hundred".