1222549 has 8 divisors (see below), whose sum is σ = 1263168. Its totient is φ = 1182720.

The previous prime is 1222537. The next prime is 1222561. The reversal of 1222549 is 9452221.

It is an interprime number because it is at equal distance from previous prime (1222537) and next prime (1222561).

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 1222549 - 2⁹ = 1222037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4629 + ... + 4885.

It is an arithmetic number, because the mean of its divisors is an integer number (157896).

2^1222549 is an apocalyptic number.

It is an amenable number.

1222549 is a deficient number, since it is larger than the sum of its proper divisors (40619).

1222549 is an equidigital number, since it uses as much as digits as its factorization.

1222549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395.

The product of its digits is 1440, while the sum is 25.

The square root of 1222549 is about 1105.6893777187. The cubic root of 1222549 is about 106.9273387957.

It can be divided in two parts, 1222 and 549, that added together give a palindrome (1771).

The spelling of 1222549 in words is "one million, two hundred twenty-two thousand, five hundred forty-nine".