12272755 has 16 divisors (see below), whose sum is σ = 16153344. Its totient is φ = 8877280.

The previous prime is 12272749. The next prime is 12272779. The reversal of 12272755 is 55727221.

It is not a de Polignac number, because 12272755 - 2¹³ = 12264563 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 11994 + ... + 12976.

It is an arithmetic number, because the mean of its divisors is an integer number (1009584).

Almost surely, 2^12272755 is an apocalyptic number.

12272755 is a deficient number, since it is larger than the sum of its proper divisors (3880589).

12272755 is a wasteful number, since it uses less digits than its factorization.

12272755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226.

The product of its digits is 9800, while the sum is 31.

The square root of 12272755 is about 3503.2492060943. The cubic root of 12272755 is about 230.6644616586.

Adding to 12272755 its reverse (55727221), we get a palindrome (67999976).

The spelling of 12272755 in words is "twelve million, two hundred seventy-two thousand, seven hundred fifty-five".