1055555500 has 48 divisors (see below), whose sum is σ = 2440960704. Its totient is φ = 397382400.

The previous prime is 1055555477. The next prime is 1055555503. The reversal of 1055555500 is 55555501.

It is a super-2 number, since 2×1055555500² = 2228394827160500000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055555503) 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, 53592 + ... + 70591.

It is an arithmetic number, because the mean of its divisors is an integer number (50853348).

Almost surely, 2^1055555500 is an apocalyptic number.

1055555500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055555500 is an abundant number, since it is smaller than the sum of its proper divisors (1385405204).

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

1055555500 is a wasteful number, since it uses less digits than its factorization.

1055555500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124219 (or 124207 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 1055555500 is about 32489.3136277146. The cubic root of 1055555500 is about 1018.1857728520.

Subtracting from 1055555500 its reverse (55555501), we obtain a palindrome (999999999).

The spelling of 1055555500 in words is "one billion, fifty-five million, five hundred fifty-five thousand, five hundred".