11775971 has 2 divisors, whose sum is σ = 11775972. Its totient is φ = 11775970.

The previous prime is 11775949. The next prime is 11776003. The reversal of 11775971 is 17957711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11775971 - 2²² = 7581667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11775371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5887985 + 5887986.

It is an arithmetic number, because the mean of its divisors is an integer number (5887986).

Almost surely, 2^11775971 is an apocalyptic number.

11775971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11775971 is an equidigital number, since it uses as much as digits as its factorization.

11775971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15435, while the sum is 38.

The square root of 11775971 is about 3431.6134689093. The cubic root of 11775971 is about 227.5091716304.

The spelling of 11775971 in words is "eleven million, seven hundred seventy-five thousand, nine hundred seventy-one".