543978 has 24 divisors (see below), whose sum is σ = 1205568. Its totient is φ = 177192.

The previous prime is 543971. The next prime is 543997. The reversal of 543978 is 879345.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 525 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (50232).

2⁵⁴³⁹⁷⁸ is an apocalyptic number.

543978 is an abundant number, since it is smaller than the sum of its proper divisors (661590).

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

543978 is a wasteful number, since it uses less digits than its factorization.

543978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 695 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 543978 is about 737.5486424637. The cubic root of 543978 is about 81.6320015773.

It can be divided in two parts, 543 and 978, that added together give a square (1521 = 39²).

The spelling of 543978 in words is "five hundred forty-three thousand, nine hundred seventy-eight".