11875771 has 4 divisors (see below), whose sum is σ = 11913552. Its totient is φ = 11837992.

The previous prime is 11875769. The next prime is 11875789. The reversal of 11875771 is 17757811.

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: 17757811 = 3469 ⋅5119.

It is a cyclic number.

It is not a de Polignac number, because 11875771 - 2¹ = 11875769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11875771.

It is not an unprimeable number, because it can be changed into a prime (11872771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18415 + ... + 19048.

It is an arithmetic number, because the mean of its divisors is an integer number (2978388).

Almost surely, 2^11875771 is an apocalyptic number.

11875771 is a deficient number, since it is larger than the sum of its proper divisors (37781).

11875771 is an equidigital number, since it uses as much as digits as its factorization.

11875771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37780.

The product of its digits is 13720, while the sum is 37.

The square root of 11875771 is about 3446.1240546446. The cubic root of 11875771 is about 228.1500692035.

It can be divided in two parts, 118757 and 71, that added together give a triangular number (118828 = T₄₈₇).

The spelling of 11875771 in words is "eleven million, eight hundred seventy-five thousand, seven hundred seventy-one".