1226558 has 4 divisors (see below), whose sum is σ = 1839840. Its totient is φ = 613278.

The previous prime is 1226557. The next prime is 1226581. The reversal of 1226558 is 8556221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8556221 = 83 ⋅103087.

It is a self number, because there is not a number n which added to its sum of digits gives 1226558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226557) by changing a digit.

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 as a sum of consecutive naturals, namely, 306638 + ... + 306641.

It is an arithmetic number, because the mean of its divisors is an integer number (459960).

2^1226558 is an apocalyptic number.

1226558 is a deficient number, since it is larger than the sum of its proper divisors (613282).

1226558 is an equidigital number, since it uses as much as digits as its factorization.

1226558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613281.

The product of its digits is 4800, while the sum is 29.

The square root of 1226558 is about 1107.5007900674. The cubic root of 1226558 is about 107.0440904853.

The spelling of 1226558 in words is "one million, two hundred twenty-six thousand, five hundred fifty-eight".