11817001 has 4 divisors (see below), whose sum is σ = 13505152. Its totient is φ = 10128852.

The previous prime is 11816999. The next prime is 11817019. The reversal of 11817001 is 10071811.

11817001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11817001 - 2¹ = 11816999 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 11817001.

It is not an unprimeable number, because it can be changed into a prime (11817301) 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, 844065 + ... + 844078.

It is an arithmetic number, because the mean of its divisors is an integer number (3376288).

Almost surely, 2^11817001 is an apocalyptic number.

It is an amenable number.

11817001 is a deficient number, since it is larger than the sum of its proper divisors (1688151).

11817001 is an equidigital number, since it uses as much as digits as its factorization.

11817001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688150.

The product of its (nonzero) digits is 56, while the sum is 19.

The square root of 11817001 is about 3437.5865080024. The cubic root of 11817001 is about 227.7730955391.

Adding to 11817001 its reverse (10071811), we get a palindrome (21888812).

The spelling of 11817001 in words is "eleven million, eight hundred seventeen thousand, one".