1226255 has 4 divisors (see below), whose sum is σ = 1471512. Its totient is φ = 981000.

The previous prime is 1226237. The next prime is 1226257. The reversal of 1226255 is 5526221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5526221 = 1789 ⋅3089.

It is not a de Polignac number, because 1226255 - 2⁶ = 1226191 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226257) 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 3 ways as a sum of consecutive naturals, for example, 122621 + ... + 122630.

It is an arithmetic number, because the mean of its divisors is an integer number (367878).

2^1226255 is an apocalyptic number.

1226255 is a deficient number, since it is larger than the sum of its proper divisors (245257).

1226255 is an equidigital number, since it uses as much as digits as its factorization.

1226255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245256.

The product of its digits is 1200, while the sum is 23.

The square root of 1226255 is about 1107.3639871334. The cubic root of 1226255 is about 107.0352752939.

The spelling of 1226255 in words is "one million, two hundred twenty-six thousand, two hundred fifty-five".