11141661 has 4 divisors (see below), whose sum is σ = 14855552. Its totient is φ = 7427772.

The previous prime is 11141621. The next prime is 11141693. The reversal of 11141661 is 16614111.

11141661 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16614111 = 3 ⋅5538037.

It is not a de Polignac number, because 11141661 - 2⁹ = 11141149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11141621) 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, 1856941 + ... + 1856946.

It is an arithmetic number, because the mean of its divisors is an integer number (3713888).

Almost surely, 2^11141661 is an apocalyptic number.

It is an amenable number.

11141661 is a deficient number, since it is larger than the sum of its proper divisors (3713891).

11141661 is an equidigital number, since it uses as much as digits as its factorization.

11141661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713890.

The product of its digits is 144, while the sum is 21.

The square root of 11141661 is about 3337.9126711165. The cubic root of 11141661 is about 223.3486405686.

Adding to 11141661 its reverse (16614111), we get a palindrome (27755772).

It can be divided in two parts, 1114 and 1661, that added together give a triangular number (2775 = T₇₄).

The spelling of 11141661 in words is "eleven million, one hundred forty-one thousand, six hundred sixty-one".