21441041 has 4 divisors (see below), whose sum is σ = 21534900. Its totient is φ = 21347184.

The previous prime is 21441031. The next prime is 21441089. The reversal of 21441041 is 14014412.

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 15171025 + 6270016 = 3895^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 21441041 - 2¹⁰ = 21440017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21441001) 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, 46586 + ... + 47043.

It is an arithmetic number, because the mean of its divisors is an integer number (5383725).

Almost surely, 2^21441041 is an apocalyptic number.

It is an amenable number.

21441041 is a deficient number, since it is larger than the sum of its proper divisors (93859).

21441041 is an equidigital number, since it uses as much as digits as its factorization.

21441041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93858.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 21441041 is about 4630.4471706305. The cubic root of 21441041 is about 277.8104784554.

Adding to 21441041 its reverse (14014412), we get a palindrome (35455453).

The spelling of 21441041 in words is "twenty-one million, four hundred forty-one thousand, forty-one".