805341221 has 4 divisors (see below), whose sum is σ = 852714252. Its totient is φ = 757968192.

The previous prime is 805341203. The next prime is 805341253. The reversal of 805341221 is 122143508.

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 326344225 + 478996996 = 18065^2 + 21886^2 .

It is a cyclic number.

It is not a de Polignac number, because 805341221 - 2²² = 801146917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805341521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23686490 + ... + 23686523.

It is an arithmetic number, because the mean of its divisors is an integer number (213178563).

Almost surely, 2^805341221 is an apocalyptic number.

It is an amenable number.

805341221 is a deficient number, since it is larger than the sum of its proper divisors (47373031).

805341221 is a wasteful number, since it uses less digits than its factorization.

805341221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47373030.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 805341221 is about 28378.5345111406. The cubic root of 805341221 is about 930.3791651589.

Adding to 805341221 its reverse (122143508), we get a palindrome (927484729).

The spelling of 805341221 in words is "eight hundred five million, three hundred forty-one thousand, two hundred twenty-one".