221459 has 8 divisors (see below), whose sum is σ = 268128. Its totient is φ = 178560.

The previous prime is 221453. The next prime is 221461. The reversal of 221459 is 954122.

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

It is a cyclic number.

It is not a de Polignac number, because 221459 - 2⁸ = 221203 is a prime.

221459 is a modest number, since divided by 459 gives 221 as remainder.

It is not an unprimeable number, because it can be changed into a prime (221453) 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, 812 + ... + 1049.

It is an arithmetic number, because the mean of its divisors is an integer number (33516).

2²²¹⁴⁵⁹ is an apocalyptic number.

221459 is a deficient number, since it is larger than the sum of its proper divisors (46669).

221459 is a wasteful number, since it uses less digits than its factorization.

221459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885.

The product of its digits is 720, while the sum is 23.

The square root of 221459 is about 470.5943051079. The cubic root of 221459 is about 60.5012635485.

The spelling of 221459 in words is "two hundred twenty-one thousand, four hundred fifty-nine".