20801441 has 2 divisors, whose sum is σ = 20801442. Its totient is φ = 20801440.

The previous prime is 20801419. The next prime is 20801467. The reversal of 20801441 is 14410802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18241441 + 2560000 = 4271^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 20801441 - 2¹⁴ = 20785057 is a prime.

It is not a weakly prime, because it can be changed into another prime (20801471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10400720 + 10400721.

It is an arithmetic number, because the mean of its divisors is an integer number (10400721).

Almost surely, 2^20801441 is an apocalyptic number.

It is an amenable number.

20801441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20801441 is an equidigital number, since it uses as much as digits as its factorization.

20801441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 20801441 is about 4560.8596777362. The cubic root of 20801441 is about 275.0201241471.

The spelling of 20801441 in words is "twenty million, eight hundred one thousand, four hundred forty-one".