222549 has 8 divisors (see below), whose sum is σ = 306432. Its totient is φ = 143520.

The previous prime is 222533. The next prime is 222553. The reversal of 222549 is 945222.

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

It is not a de Polignac number, because 222549 - 2⁴ = 222533 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

222549 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222149) 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, 1104 + ... + 1289.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2²²²⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

222549 is a deficient number, since it is larger than the sum of its proper divisors (83883).

222549 is a wasteful number, since it uses less digits than its factorization.

222549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427.

The product of its digits is 1440, while the sum is 24.

The square root of 222549 is about 471.7509936397. The cubic root of 222549 is about 60.6003616182.

The spelling of 222549 in words is "two hundred twenty-two thousand, five hundred forty-nine".