11569971 has 8 divisors (see below), whose sum is σ = 17630464. Its totient is φ = 6611400.

The previous prime is 11569969. The next prime is 11569973. The reversal of 11569971 is 17996511.

It is an interprime number because it is at equal distance from previous prime (11569969) and next prime (11569973).

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

It is not a de Polignac number, because 11569971 - 2¹ = 11569969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11569973) 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 7 ways as a sum of consecutive naturals, for example, 275455 + ... + 275496.

It is an arithmetic number, because the mean of its divisors is an integer number (2203808).

Almost surely, 2^11569971 is an apocalyptic number.

11569971 is a deficient number, since it is larger than the sum of its proper divisors (6060493).

11569971 is an equidigital number, since it uses as much as digits as its factorization.

11569971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550961.

The product of its digits is 17010, while the sum is 39.

The square root of 11569971 is about 3401.4660074738. The cubic root of 11569971 is about 226.1747349946.

The spelling of 11569971 in words is "eleven million, five hundred sixty-nine thousand, nine hundred seventy-one".