543973 has 8 divisors (see below), whose sum is σ = 577728. Its totient is φ = 511104.

The previous prime is 543971. The next prime is 543997. The reversal of 543973 is 379345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 4-Lehmer number, since φ(543973) divides (543973-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 543973 - 2¹ = 543971 is a prime.

It is a Duffinian number.

543973 is a lucky number.

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 7 ways as a sum of consecutive naturals, for example, 1365 + ... + 1717.

It is an arithmetic number, because the mean of its divisors is an integer number (72216).

2⁵⁴³⁹⁷³ is an apocalyptic number.

It is an amenable number.

543973 is a deficient number, since it is larger than the sum of its proper divisors (33755).

543973 is a wasteful number, since it uses less digits than its factorization.

543973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443.

The product of its digits is 11340, while the sum is 31.

The square root of 543973 is about 737.5452528489. The cubic root of 543973 is about 81.6317514684.

The spelling of 543973 in words is "five hundred forty-three thousand, nine hundred seventy-three".