105520144 has 10 divisors (see below), whose sum is σ = 204445310. Its totient is φ = 52760064.

The previous prime is 105520099. The next prime is 105520147. The reversal of 105520144 is 441025501.

It can be written as a sum of positive squares in only one way, i.e., 99760144 + 5760000 = 9988^2 + 2400^2 .

It is a super-2 number, since 2×105520144² = 22269001579561472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105520147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3297489 + ... + 3297520.

It is an arithmetic number, because the mean of its divisors is an integer number (20444531).

Almost surely, 2^105520144 is an apocalyptic number.

It is an amenable number.

105520144 is a deficient number, since it is larger than the sum of its proper divisors (98925166).

105520144 is an equidigital number, since it uses as much as digits as its factorization.

105520144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6595017 (or 6595011 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 105520144 is about 10272.2998398606. The cubic root of 105520144 is about 472.5471248128.

Adding to 105520144 its reverse (441025501), we get a palindrome (546545645).

The spelling of 105520144 in words is "one hundred five million, five hundred twenty thousand, one hundred forty-four".