105520444 has 24 divisors (see below), whose sum is σ = 193893840. Its totient is φ = 50176896.

The previous prime is 105520421. The next prime is 105520451. The reversal of 105520444 is 444025501.

It is a happy number.

It is a super-2 number, since 2×105520444² = 22269128203914272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984 + ... + 14560.

It is an arithmetic number, because the mean of its divisors is an integer number (8078910).

Almost surely, 2^105520444 is an apocalyptic number.

It is an amenable number.

105520444 is a deficient number, since it is larger than the sum of its proper divisors (88373396).

105520444 is a wasteful number, since it uses less digits than its factorization.

105520444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13677 (or 13675 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 105520444 is about 10272.3144422277. The cubic root of 105520444 is about 472.5475726389.

Adding to 105520444 its reverse (444025501), we get a palindrome (549545945).

The spelling of 105520444 in words is "one hundred five million, five hundred twenty thousand, four hundred forty-four".