20000801 has 2 divisors, whose sum is σ = 20000802. Its totient is φ = 20000800.

The previous prime is 20000791. The next prime is 20000821. The reversal of 20000801 is 10800002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19571776 + 429025 = 4424^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000801 - 2¹⁴ = 19984417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20000821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000400 + 10000401.

It is an arithmetic number, because the mean of its divisors is an integer number (10000401).

Almost surely, 2^20000801 is an apocalyptic number.

It is an amenable number.

20000801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000801 is an equidigital number, since it uses as much as digits as its factorization.

20000801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 20000801 is about 4472.2255086254. The cubic root of 20000801 is about 271.4453853586.

Adding to 20000801 its reverse (10800002), we get a palindrome (30800803).

The spelling of 20000801 in words is "twenty million, eight hundred one", and thus it is an aban number.