1222526 has 4 divisors (see below), whose sum is σ = 1833792. Its totient is φ = 611262.

The previous prime is 1222523. The next prime is 1222537. The reversal of 1222526 is 6252221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6252221 = 2281 ⋅2741.

It is a d-powerful number, because it can be written as 1 + 2⁴ + 2¹⁴ + 2¹⁵ + 5⁷ + 2²⁰ + 6⁶ .

It is a junction number, because it is equal to n+sod(n) for n = 1222498 and 1222507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222523) 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, 305630 + ... + 305633.

It is an arithmetic number, because the mean of its divisors is an integer number (458448).

2^1222526 is an apocalyptic number.

1222526 is a deficient number, since it is larger than the sum of its proper divisors (611266).

1222526 is an equidigital number, since it uses as much as digits as its factorization.

1222526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611265.

The product of its digits is 480, while the sum is 20.

The square root of 1222526 is about 1105.6789769187. The cubic root of 1222526 is about 106.9266682447.

Adding to 1222526 its reverse (6252221), we get a palindrome (7474747).

The spelling of 1222526 in words is "one million, two hundred twenty-two thousand, five hundred twenty-six".