1055551500 has 240 divisors, whose sum is σ = 3504140640. Its totient is φ = 276566400.

The previous prime is 1055551499. The next prime is 1055551501. The reversal of 1055551500 is 51555501.

1055551500 is a `hidden beast` number, since 10 + 55 + 551 + 50 + 0 = 666.

1055551500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1055551499) and next prime (1055551501).

It is a super-3 number, since 3×1055551500³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1055551501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2713306 + ... + 2713694.

It is an arithmetic number, because the mean of its divisors is an integer number (14600586).

Almost surely, 2^1055551500 is an apocalyptic number.

1055551500 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 1055551500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752070320).

1055551500 is an abundant number, since it is smaller than the sum of its proper divisors (2448589140).

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

1055551500 is a wasteful number, since it uses less digits than its factorization.

1055551500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The square root of 1055551500 is about 32489.2520689535. The cubic root of 1055551500 is about 1018.1844867209.

The spelling of 1055551500 in words is "one billion, fifty-five million, five hundred fifty-one thousand, five hundred".