11641081 has 4 divisors (see below), whose sum is σ = 11696464. Its totient is φ = 11585700.

The previous prime is 11641037. The next prime is 11641087. The reversal of 11641081 is 18014611.

11641081 is digitally balanced in base 2 and base 3, because in such bases 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, and also an emirpimes, since its reverse is a distinct semiprime: 18014611 = 17 ⋅1059683.

It is a cyclic number.

It is not a de Polignac number, because 11641081 - 2⁷ = 11640953 is a prime.

It is a super-2 number, since 2×11641081² = 271029533697122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11641087) 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, 27375 + ... + 27796.

It is an arithmetic number, because the mean of its divisors is an integer number (2924116).

Almost surely, 2^11641081 is an apocalyptic number.

It is an amenable number.

11641081 is a deficient number, since it is larger than the sum of its proper divisors (55383).

11641081 is an equidigital number, since it uses as much as digits as its factorization.

11641081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55382.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 11641081 is about 3411.9028415241. The cubic root of 11641081 is about 226.6371518182.

Adding to 11641081 its reverse (18014611), we get a palindrome (29655692).

The spelling of 11641081 in words is "eleven million, six hundred forty-one thousand, eighty-one".