1223255 has 16 divisors (see below), whose sum is σ = 1672704. Its totient is φ = 850080.

The previous prime is 1223237. The next prime is 1223263. The reversal of 1223255 is 5523221.

1223255 = T₆₉₇ + T₆₉₈ + ... + T₇₀₁.

It is not a de Polignac number, because 1223255 - 2¹⁰ = 1222231 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 782 + ... + 1748.

It is an arithmetic number, because the mean of its divisors is an integer number (104544).

2^1223255 is an apocalyptic number.

1223255 is a deficient number, since it is larger than the sum of its proper divisors (449449).

1223255 is a wasteful number, since it uses less digits than its factorization.

1223255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006.

The product of its digits is 600, while the sum is 20.

The square root of 1223255 is about 1106.0085894784. The cubic root of 1223255 is about 106.9479177048.

Adding to 1223255 its reverse (5523221), we get a palindrome (6746476).

The spelling of 1223255 in words is "one million, two hundred twenty-three thousand, two hundred fifty-five".