1603801 has 2 divisors, whose sum is σ = 1603802. Its totient is φ = 1603800.

The previous prime is 1603799. The next prime is 1603807. The reversal of 1603801 is 1083061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1498176 + 105625 = 1224^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1603801 - 2¹ = 1603799 is a prime.

Together with 1603799, 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 (1603807) 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 as a sum of consecutive naturals, namely, 801900 + 801901.

It is an arithmetic number, because the mean of its divisors is an integer number (801901).

2^1603801 is an apocalyptic number.

It is an amenable number.

1603801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603801 is an equidigital number, since it uses as much as digits as its factorization.

1603801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1603801 is about 1266.4126499684. The cubic root of 1603801 is about 117.0532545449.

Adding to 1603801 its reverse (1083061), we get a palindrome (2686862).

It can be divided in two parts, 1603 and 801, that multiplied together give a triangular number (1284003 = T₁₆₀₂).

The spelling of 1603801 in words is "one million, six hundred three thousand, eight hundred one".