11555141 has 4 divisors (see below), whose sum is σ = 12444012. Its totient is φ = 10666272.

The previous prime is 11555129. The next prime is 11555143. The reversal of 11555141 is 14155511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4532641 + 7022500 = 2129^2 + 2650^2 .

It is a cyclic number.

It is not a de Polignac number, because 11555141 - 2⁶ = 11555077 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 (11555143) 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, 444416 + ... + 444441.

It is an arithmetic number, because the mean of its divisors is an integer number (3111003).

Almost surely, 2^11555141 is an apocalyptic number.

It is an amenable number.

11555141 is a deficient number, since it is larger than the sum of its proper divisors (888871).

11555141 is an equidigital number, since it uses as much as digits as its factorization.

11555141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888870.

The product of its digits is 500, while the sum is 23.

The square root of 11555141 is about 3399.2853660733. The cubic root of 11555141 is about 226.0780592862.

The spelling of 11555141 in words is "eleven million, five hundred fifty-five thousand, one hundred forty-one".