54778880 has 88 divisors (see below), whose sum is σ = 141685152. Its totient is φ = 20201472.

The previous prime is 54778873. The next prime is 54778901. The reversal of 54778880 is 8887745.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66149 + ... + 66971.

Almost surely, 2^54778880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54778880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70842576).

54778880 is an abundant number, since it is smaller than the sum of its proper divisors (86906272).

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

54778880 is a wasteful number, since it uses less digits than its factorization.

54778880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 54778880 is about 7401.2755657387. The cubic root of 54778880 is about 379.7849198388.

The spelling of 54778880 in words is "fifty-four million, seven hundred seventy-eight thousand, eight hundred eighty".