105773221 has 4 divisors (see below), whose sum is σ = 106166700. Its totient is φ = 105379744.

The previous prime is 105773203. The next prime is 105773263. The reversal of 105773221 is 122377501.

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 21390625 + 84382596 = 4625^2 + 9186^2 .

It is a cyclic number.

It is not a de Polignac number, because 105773221 - 2²⁵ = 72218789 is a prime.

It is a super-2 number, since 2×105773221² = 22375948561429682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105773221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105773321) 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, 196336 + ... + 196873.

It is an arithmetic number, because the mean of its divisors is an integer number (26541675).

Almost surely, 2^105773221 is an apocalyptic number.

It is an amenable number.

105773221 is a deficient number, since it is larger than the sum of its proper divisors (393479).

105773221 is an equidigital number, since it uses as much as digits as its factorization.

105773221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393478.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 105773221 is about 10284.6108822843. The cubic root of 105773221 is about 472.9246051164.

The spelling of 105773221 in words is "one hundred five million, seven hundred seventy-three thousand, two hundred twenty-one".