12072755 has 4 divisors (see below), whose sum is σ = 14487312. Its totient is φ = 9658200.

The previous prime is 12072743. The next prime is 12072763. The reversal of 12072755 is 55727021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55727021 = 7 ⋅7961003.

It is not a de Polignac number, because 12072755 - 2¹² = 12068659 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 3 ways as a sum of consecutive naturals, for example, 1207271 + ... + 1207280.

It is an arithmetic number, because the mean of its divisors is an integer number (3621828).

Almost surely, 2^12072755 is an apocalyptic number.

12072755 is a deficient number, since it is larger than the sum of its proper divisors (2414557).

12072755 is an equidigital number, since it uses as much as digits as its factorization.

12072755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414556.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 12072755 is about 3474.5870258205. The cubic root of 12072755 is about 229.4046037071.

Adding to 12072755 its reverse (55727021), we get a palindrome (67799776).

The spelling of 12072755 in words is "twelve million, seventy-two thousand, seven hundred fifty-five".