11495721 has 4 divisors (see below), whose sum is σ = 15327632. Its totient is φ = 7663812.

The previous prime is 11495713. The next prime is 11495773. The reversal of 11495721 is 12759411.

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 not a de Polignac number, because 11495721 - 2³ = 11495713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11495021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1915951 + ... + 1915956.

It is an arithmetic number, because the mean of its divisors is an integer number (3831908).

Almost surely, 2^11495721 is an apocalyptic number.

It is an amenable number.

11495721 is a deficient number, since it is larger than the sum of its proper divisors (3831911).

11495721 is an equidigital number, since it uses as much as digits as its factorization.

11495721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831910.

The product of its digits is 2520, while the sum is 30.

The square root of 11495721 is about 3390.5340287335. The cubic root of 11495721 is about 225.6898727421.

The spelling of 11495721 in words is "eleven million, four hundred ninety-five thousand, seven hundred twenty-one".