543953 has 4 divisors (see below), whose sum is σ = 562740. Its totient is φ = 525168.

The previous prime is 543929. The next prime is 543967. The reversal of 543953 is 359345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 305809 + 238144 = 553^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 543953 - 2⁶ = 543889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 18757 = 543953 / (5 + 4 + 3 + 9 + 5 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (543253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9350 + ... + 9407.

It is an arithmetic number, because the mean of its divisors is an integer number (140685).

2⁵⁴³⁹⁵³ is an apocalyptic number.

It is an amenable number.

543953 is a deficient number, since it is larger than the sum of its proper divisors (18787).

543953 is a wasteful number, since it uses less digits than its factorization.

543953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18786.

The product of its digits is 8100, while the sum is 29.

The square root of 543953 is about 737.5316942342. The cubic root of 543953 is about 81.6307510173.

The spelling of 543953 in words is "five hundred forty-three thousand, nine hundred fifty-three".