20791801 has 2 divisors, whose sum is σ = 20791802. Its totient is φ = 20791800.

The previous prime is 20791783. The next prime is 20791819. The reversal of 20791801 is 10819702.

It is a balanced prime because it is at equal distance from previous prime (20791783) and next prime (20791819).

It can be written as a sum of positive squares in only one way, i.e., 18481401 + 2310400 = 4299^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 20791801 - 2¹¹ = 20789753 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20791801.

It is not a weakly prime, because it can be changed into another prime (20791831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10395900 + 10395901.

It is an arithmetic number, because the mean of its divisors is an integer number (10395901).

Almost surely, 2^20791801 is an apocalyptic number.

It is an amenable number.

20791801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20791801 is an equidigital number, since it uses as much as digits as its factorization.

20791801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 20791801 is about 4559.8027369613. The cubic root of 20791801 is about 274.9776334426.

The spelling of 20791801 in words is "twenty million, seven hundred ninety-one thousand, eight hundred one".