1055555000 has 80 divisors (see below), whose sum is σ = 2497544280. Its totient is φ = 418064000.

The previous prime is 1055554993. The next prime is 1055555009. The reversal of 1055555000 is 5555501.

It is a super-2 number, since 2×1055555000² = 2228392716050000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055555009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 534014 + ... + 535986.

Almost surely, 2^1055555000 is an apocalyptic number.

1055555000 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 1055555000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1248772140).

1055555000 is an abundant number, since it is smaller than the sum of its proper divisors (1441989280).

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

1055555000 is a wasteful number, since it uses less digits than its factorization.

1055555000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2087 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 1055555000 is about 32489.3059328758. The cubic root of 1055555000 is about 1018.1856120858.

The spelling of 1055555000 in words is "one billion, fifty-five million, five hundred fifty-five thousand".