11497971 has 4 divisors (see below), whose sum is σ = 15330632. Its totient is φ = 7665312.

The previous prime is 11497963. The next prime is 11497973. The reversal of 11497971 is 17979411.

11497971 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.

It is not a de Polignac number, because 11497971 - 2³ = 11497963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11497973) 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, 1916326 + ... + 1916331.

It is an arithmetic number, because the mean of its divisors is an integer number (3832658).

Almost surely, 2^11497971 is an apocalyptic number.

11497971 is a deficient number, since it is larger than the sum of its proper divisors (3832661).

11497971 is an equidigital number, since it uses as much as digits as its factorization.

11497971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832660.

The product of its digits is 15876, while the sum is 39.

The square root of 11497971 is about 3390.8658186369. The cubic root of 11497971 is about 225.7045961650.

The spelling of 11497971 in words is "eleven million, four hundred ninety-seven thousand, nine hundred seventy-one".