1055533680 has 180 divisors, whose sum is σ = 3682817112. Its totient is φ = 281335680.

The previous prime is 1055533667. The next prime is 1055533697. The reversal of 1055533680 is 863355501.

1055533680 is a `hidden beast` number, since 10 + 55 + 533 + 68 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a super-2 number, since 2×1055533680² = 2228302699228684800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 523875 + ... + 525885.

Almost surely, 2^1055533680 is an apocalyptic number.

1055533680 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 1055533680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841408556).

1055533680 is an abundant number, since it is smaller than the sum of its proper divisors (2627283432).

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

1055533680 is an frugal number, since it uses more digits than its factorization.

1055533680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 1055533680 is about 32488.9778232557. The cubic root of 1055533680 is about 1018.1787569675.

The spelling of 1055533680 in words is "one billion, fifty-five million, five hundred thirty-three thousand, six hundred eighty".