54878643 has 12 divisors (see below), whose sum is σ = 82002960. Its totient is φ = 35324016.

The previous prime is 54878641. The next prime is 54878647. The reversal of 54878643 is 34687845.

54878643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54878643 - 2¹ = 54878641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54878641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104871 + ... + 105392.

It is an arithmetic number, because the mean of its divisors is an integer number (6833580).

Almost surely, 2^54878643 is an apocalyptic number.

54878643 is a deficient number, since it is larger than the sum of its proper divisors (27124317).

54878643 is a wasteful number, since it uses less digits than its factorization.

54878643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210298 (or 210295 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 54878643 is about 7408.0120815236. The cubic root of 54878643 is about 380.0153340996.

The spelling of 54878643 in words is "fifty-four million, eight hundred seventy-eight thousand, six hundred forty-three".