105445223 has 4 divisors (see below), whose sum is σ = 113556408. Its totient is φ = 97334040.

The previous prime is 105445217. The next prime is 105445243. The reversal of 105445223 is 322544501.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105445223 is a prime.

It is a super-2 number, since 2×105445223² = 22237390107039458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105445192 and 105445201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105445243) 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, 4055573 + ... + 4055598.

It is an arithmetic number, because the mean of its divisors is an integer number (28389102).

Almost surely, 2^105445223 is an apocalyptic number.

105445223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

105445223 is a deficient number, since it is larger than the sum of its proper divisors (8111185).

105445223 is an equidigital number, since it uses as much as digits as its factorization.

105445223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111184.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 105445223 is about 10268.6524432371. The cubic root of 105445223 is about 472.4352596461.

Adding to 105445223 its reverse (322544501), we get a palindrome (427989724).

The spelling of 105445223 in words is "one hundred five million, four hundred forty-five thousand, two hundred twenty-three".