1222577755 has 16 divisors (see below), whose sum is σ = 1700296704. Its totient is φ = 826529760.

The previous prime is 1222577753. The next prime is 1222577767. The reversal of 1222577755 is 5577752221.

It is not a de Polignac number, because 1222577755 - 2¹ = 1222577753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222577753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243507 + ... + 248476.

It is an arithmetic number, because the mean of its divisors is an integer number (106268544).

Almost surely, 2^1222577755 is an apocalyptic number.

1222577755 is a deficient number, since it is larger than the sum of its proper divisors (477718949).

1222577755 is an equidigital number, since it uses as much as digits as its factorization.

1222577755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492066.

The product of its digits is 343000, while the sum is 43.

The square root of 1222577755 is about 34965.3793773212. The cubic root of 1222577755 is about 1069.2817711834.

The spelling of 1222577755 in words is "one billion, two hundred twenty-two million, five hundred seventy-seven thousand, seven hundred fifty-five".