1055540000 has 120 divisors (see below), whose sum is σ = 2630392380. Its totient is φ = 416768000.

The previous prime is 1055539993. The next prime is 1055540009. The reversal of 1055540000 is 455501.

It can be written as a sum of positive squares in 10 ways, for example, as 153859216 + 901680784 = 12404^2 + 30028^2 .

It is a super-2 number, since 2×1055540000² = 2228329383200000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1055540009) 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, 1779704 + ... + 1780296.

Almost surely, 2^1055540000 is an apocalyptic number.

1055540000 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 1055540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315196190).

1055540000 is an abundant number, since it is smaller than the sum of its proper divisors (1574852380).

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

1055540000 is an frugal number, since it uses more digits than its factorization.

1055540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 1055540000 is about 32489.0750868657. The cubic root of 1055540000 is about 1018.1807890760.

Adding to 1055540000 its reverse (455501), we get a palindrome (1055995501).

The spelling of 1055540000 in words is "one billion, fifty-five million, five hundred forty thousand".