1222755 has 8 divisors (see below), whose sum is σ = 1956432. Its totient is φ = 652128.

The previous prime is 1222751. The next prime is 1222757. The reversal of 1222755 is 5572221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222755 - 2² = 1222751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40744 + ... + 40773.

It is an arithmetic number, because the mean of its divisors is an integer number (244554).

2^1222755 is an apocalyptic number.

1222755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1222755 is a deficient number, since it is larger than the sum of its proper divisors (733677).

1222755 is an equidigital number, since it uses as much as digits as its factorization.

1222755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81525.

The product of its digits is 1400, while the sum is 24.

The square root of 1222755 is about 1105.7825283481. The cubic root of 1222755 is about 106.9333442250.

Adding to 1222755 its reverse (5572221), we get a palindrome (6794976).

The spelling of 1222755 in words is "one million, two hundred twenty-two thousand, seven hundred fifty-five".