805021201 has 4 divisors (see below), whose sum is σ = 805284900. Its totient is φ = 804757504.

The previous prime is 805021177. The next prime is 805021253. The reversal of 805021201 is 102120508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 711608976 + 93412225 = 26676^2 + 9665^2 .

It is a cyclic number.

It is not a de Polignac number, because 805021201 - 2⁵ = 805021169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805021271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127216 + ... + 133393.

It is an arithmetic number, because the mean of its divisors is an integer number (201321225).

Almost surely, 2^805021201 is an apocalyptic number.

It is an amenable number.

805021201 is a deficient number, since it is larger than the sum of its proper divisors (263699).

805021201 is a wasteful number, since it uses less digits than its factorization.

805021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263698.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 805021201 is about 28372.8955342947. The cubic root of 805021201 is about 930.2559133085.

Adding to 805021201 its reverse (102120508), we get a palindrome (907141709).

The spelling of 805021201 in words is "eight hundred five million, twenty-one thousand, two hundred one".