11445997 has 4 divisors (see below), whose sum is σ = 11478240. Its totient is φ = 11413756.

The previous prime is 11445983. The next prime is 11446007. The reversal of 11445997 is 79954411.

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 11445997 - 2¹⁹ = 10921709 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11445977) 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, 15583 + ... + 16300.

It is an arithmetic number, because the mean of its divisors is an integer number (2869560).

Almost surely, 2^11445997 is an apocalyptic number.

It is an amenable number.

11445997 is a deficient number, since it is larger than the sum of its proper divisors (32243).

11445997 is an equidigital number, since it uses as much as digits as its factorization.

11445997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32242.

The product of its digits is 45360, while the sum is 40.

The square root of 11445997 is about 3383.1933140156. The cubic root of 11445997 is about 225.3640001114.

The spelling of 11445997 in words is "eleven million, four hundred forty-five thousand, nine hundred ninety-seven".