220539 has 16 divisors (see below), whose sum is σ = 330624. Its totient is φ = 129600.

The previous prime is 220537. The next prime is 220543. The reversal of 220539 is 935022.

It is not a de Polignac number, because 220539 - 2¹ = 220537 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220537) 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 15 ways as a sum of consecutive naturals, for example, 1272 + ... + 1434.

It is an arithmetic number, because the mean of its divisors is an integer number (20664).

2²²⁰⁵³⁹ is an apocalyptic number.

220539 is a deficient number, since it is larger than the sum of its proper divisors (110085).

220539 is a wasteful number, since it uses less digits than its factorization.

220539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 220539 is about 469.6158004156. The cubic root of 220539 is about 60.4173677815.

The spelling of 220539 in words is "two hundred twenty thousand, five hundred thirty-nine".