20101441 has 4 divisors (see below), whose sum is σ = 20236500. Its totient is φ = 19966384.

The previous prime is 20101427. The next prime is 20101483. The reversal of 20101441 is 14410102.

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 2961841 + 17139600 = 1721^2 + 4140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67306 + ... + 67603.

It is an arithmetic number, because the mean of its divisors is an integer number (5059125).

Almost surely, 2^20101441 is an apocalyptic number.

It is an amenable number.

20101441 is a deficient number, since it is larger than the sum of its proper divisors (135059).

20101441 is a wasteful number, since it uses less digits than its factorization.

20101441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135058.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 20101441 is about 4483.4630588419. The cubic root of 20101441 is about 271.8999100090.

Adding to 20101441 its reverse (14410102), we get a palindrome (34511543).

The spelling of 20101441 in words is "twenty million, one hundred one thousand, four hundred forty-one".