1223055 has 12 divisors (see below), whose sum is σ = 2120040. Its totient is φ = 652272.

The previous prime is 1223051. The next prime is 1223059. The reversal of 1223055 is 5503221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1223051) and next prime (1223059).

It is not a de Polignac number, because 1223055 - 2² = 1223051 is a prime.

1223055 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223051) 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 11 ways as a sum of consecutive naturals, for example, 13545 + ... + 13634.

It is an arithmetic number, because the mean of its divisors is an integer number (176670).

2^1223055 is an apocalyptic number.

1223055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223055 is a deficient number, since it is larger than the sum of its proper divisors (896985).

1223055 is a wasteful number, since it uses less digits than its factorization.

1223055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27190 (or 27187 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1223055 is about 1105.9181705714. The cubic root of 1223055 is about 106.9420887895.

Adding to 1223055 its reverse (5503221), we get a palindrome (6726276).

The spelling of 1223055 in words is "one million, two hundred twenty-three thousand, fifty-five".