20003801 has 2 divisors, whose sum is σ = 20003802. Its totient is φ = 20003800.

The previous prime is 20003719. The next prime is 20003803. The reversal of 20003801 is 10830002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10883401 + 9120400 = 3299^2 + 3020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003801 is a prime.

Together with 20003803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20003803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001900 + 10001901.

It is an arithmetic number, because the mean of its divisors is an integer number (10001901).

Almost surely, 2^20003801 is an apocalyptic number.

It is an amenable number.

20003801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003801 is an equidigital number, since it uses as much as digits as its factorization.

20003801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20003801 is about 4472.5608995295. The cubic root of 20003801 is about 271.4589564059.

Adding to 20003801 its reverse (10830002), we get a palindrome (30833803).

The spelling of 20003801 in words is "twenty million, three thousand, eight hundred one".