11081651 has 4 divisors (see below), whose sum is σ = 12664752. Its totient is φ = 9498552.

The previous prime is 11081647. The next prime is 11081689. The reversal of 11081651 is 15618011.

It is a happy number.

11081651 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 an emirpimes, since its reverse is a distinct semiprime: 15618011 = 307 ⋅50873.

It is not a de Polignac number, because 11081651 - 2² = 11081647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11081621) 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, 791540 + ... + 791553.

It is an arithmetic number, because the mean of its divisors is an integer number (3166188).

Almost surely, 2^11081651 is an apocalyptic number.

11081651 is a deficient number, since it is larger than the sum of its proper divisors (1583101).

11081651 is an equidigital number, since it uses as much as digits as its factorization.

11081651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583100.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 11081651 is about 3328.9113836208. The cubic root of 11081651 is about 222.9469264461.

Adding to 11081651 its reverse (15618011), we get a palindrome (26699662).

The spelling of 11081651 in words is "eleven million, eighty-one thousand, six hundred fifty-one".