1055533878 has 24 divisors (see below), whose sum is σ = 2613703248. Its totient is φ = 301581072.

The previous prime is 1055533867. The next prime is 1055533903. The reversal of 1055533878 is 8783355501.

1055533878 is a `hidden beast` number, since 10 + 5 + 553 + 3 + 87 + 8 = 666.

It is a super-2 number, since 2×1055533878² = 2228303535211437768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4188501 + ... + 4188752.

It is an arithmetic number, because the mean of its divisors is an integer number (108904302).

Almost surely, 2^1055533878 is an apocalyptic number.

1055533878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1055533878 is an abundant number, since it is smaller than the sum of its proper divisors (1558169370).

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

1055533878 is a wasteful number, since it uses less digits than its factorization.

1055533878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8377268 (or 8377265 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The square root of 1055533878 is about 32488.9808704428. The cubic root of 1055533878 is about 1018.1788206317.

The spelling of 1055533878 in words is "one billion, fifty-five million, five hundred thirty-three thousand, eight hundred seventy-eight".