1228255 has 16 divisors (see below), whose sum is σ = 1774080. Its totient is φ = 797472.

The previous prime is 1228247. The next prime is 1228273. The reversal of 1228255 is 5528221.

It is a cyclic number.

It is not a de Polignac number, because 1228255 - 2³ = 1228247 is a prime.

It is a super-2 number, since 2×1228255² = 3017220690050, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2^1228255 is an apocalyptic number.

1228255 is a deficient number, since it is larger than the sum of its proper divisors (545825).

1228255 is a wasteful number, since it uses less digits than its factorization.

1228255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its digits is 1600, while the sum is 25.

The square root of 1228255 is about 1108.2666646615. The cubic root of 1228255 is about 107.0934345605.

It can be divided in two parts, 122825 and 5, that multiplied together give a cube (614125 = 85³).

The spelling of 1228255 in words is "one million, two hundred twenty-eight thousand, two hundred fifty-five".