1226455 has 4 divisors (see below), whose sum is σ = 1471752. Its totient is φ = 981160.

The previous prime is 1226417. The next prime is 1226461. The reversal of 1226455 is 5546221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5546221 = 29 ⋅191249.

It is not a de Polignac number, because 1226455 - 2¹³ = 1218263 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁶ + 2²⁰ + 6⁶ + 4⁸ + 5² + 5³ .

It is a Duffinian number.

1226455 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122641 + ... + 122650.

It is an arithmetic number, because the mean of its divisors is an integer number (367938).

2^1226455 is an apocalyptic number.

1226455 is a deficient number, since it is larger than the sum of its proper divisors (245297).

1226455 is an equidigital number, since it uses as much as digits as its factorization.

1226455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245296.

The product of its digits is 2400, while the sum is 25.

The square root of 1226455 is about 1107.4542879957. The cubic root of 1226455 is about 107.0410940650.

It can be divided in two parts, 1226 and 455, that added together give a square (1681 = 41²).

The spelling of 1226455 in words is "one million, two hundred twenty-six thousand, four hundred fifty-five".