12775571 has 4 divisors (see below), whose sum is σ = 12793872. Its totient is φ = 12757272.

The previous prime is 12775549. The next prime is 12775577. The reversal of 12775571 is 17557721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17557721 = 37 ⋅474533.

It is a cyclic number.

It is not a de Polignac number, because 12775571 - 2¹⁰ = 12774547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12775577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8060 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (3198468).

Almost surely, 2^12775571 is an apocalyptic number.

12775571 is a deficient number, since it is larger than the sum of its proper divisors (18301).

12775571 is an equidigital number, since it uses as much as digits as its factorization.

12775571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18300.

The product of its digits is 17150, while the sum is 35.

The square root of 12775571 is about 3574.2930769594. The cubic root of 12775571 is about 233.7725100573.

The spelling of 12775571 in words is "twelve million, seven hundred seventy-five thousand, five hundred seventy-one".