54778860 has 72 divisors (see below), whose sum is σ = 171540096. Its totient is φ = 14135040.

The previous prime is 54778853. The next prime is 54778873. The reversal of 54778860 is 6887745.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 672 + ... + 10488.

Almost surely, 2^54778860 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 54778860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85770048).

54778860 is an abundant number, since it is smaller than the sum of its proper divisors (116761236).

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

54778860 is a wasteful number, since it uses less digits than its factorization.

54778860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9863 (or 9858 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 54778860 is about 7401.2742146201. The cubic root of 54778860 is about 379.7848736184.

The spelling of 54778860 in words is "fifty-four million, seven hundred seventy-eight thousand, eight hundred sixty".