54933978 has 64 divisors (see below), whose sum is σ = 128148480. Its totient is φ = 15523200.

The previous prime is 54933971. The next prime is 54934003. The reversal of 54933978 is 87933945.

It is not an unprimeable number, because it can be changed into a prime (54933971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88726 + ... + 89342.

It is an arithmetic number, because the mean of its divisors is an integer number (2002320).

Almost surely, 2^54933978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54933978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64074240).

54933978 is an abundant number, since it is smaller than the sum of its proper divisors (73214502).

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

54933978 is a wasteful number, since it uses less digits than its factorization.

54933978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723.

The product of its digits is 816480, while the sum is 48.

The square root of 54933978 is about 7411.7459481555. The cubic root of 54933978 is about 380.1430163432.

The spelling of 54933978 in words is "fifty-four million, nine hundred thirty-three thousand, nine hundred seventy-eight".