553484778 has 128 divisors (see below), whose sum is σ = 1444608000. Its totient is φ = 137168640.

The previous prime is 553484761. The next prime is 553484791. The reversal of 553484778 is 877484355.

553484778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 553484778.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1460193 + ... + 1460571.

It is an arithmetic number, because the mean of its divisors is an integer number (11286000).

Almost surely, 2^553484778 is an apocalyptic number.

553484778 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 553484778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722304000).

553484778 is an abundant number, since it is smaller than the sum of its proper divisors (891123222).

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

553484778 is a wasteful number, since it uses less digits than its factorization.

553484778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its digits is 3763200, while the sum is 51.

The square root of 553484778 is about 23526.2572033887. The cubic root of 553484778 is about 821.0480244374.

The spelling of 553484778 in words is "five hundred fifty-three million, four hundred eighty-four thousand, seven hundred seventy-eight".