220543 has 2 divisors, whose sum is σ = 220544. Its totient is φ = 220542.

The previous prime is 220537. The next prime is 220553. The reversal of 220543 is 345022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220543 - 2⁵ = 220511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110271 + 110272.

It is an arithmetic number, because the mean of its divisors is an integer number (110272).

2²²⁰⁵⁴³ is an apocalyptic number.

220543 is a deficient number, since it is larger than the sum of its proper divisors (1).

220543 is an equidigital number, since it uses as much as digits as its factorization.

220543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 220543 is about 469.6200591968. The cubic root of 220543 is about 60.4177330503.

Adding to 220543 its reverse (345022), we get a palindrome (565565).

The spelling of 220543 in words is "two hundred twenty thousand, five hundred forty-three".