11971255 has 8 divisors (see below), whose sum is σ = 14514192. Its totient is φ = 9477888.

The previous prime is 11971241. The next prime is 11971259. The reversal of 11971255 is 55217911.

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

It is a cyclic number.

It is not a de Polignac number, because 11971255 - 2¹⁷ = 11840183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11971259) 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, 11857 + ... + 12826.

It is an arithmetic number, because the mean of its divisors is an integer number (1814274).

Almost surely, 2^11971255 is an apocalyptic number.

11971255 is a deficient number, since it is larger than the sum of its proper divisors (2542937).

11971255 is an equidigital number, since it uses as much as digits as its factorization.

11971255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24785.

The product of its digits is 3150, while the sum is 31.

The square root of 11971255 is about 3459.9501441495. The cubic root of 11971255 is about 228.7598978468.

The spelling of 11971255 in words is "eleven million, nine hundred seventy-one thousand, two hundred fifty-five".