105144445 has 12 divisors (see below), whose sum is σ = 146773404. Its totient is φ = 72098880.

The previous prime is 105144437. The next prime is 105144469. The reversal of 105144445 is 544441501.

It can be written as a sum of positive squares in 2 ways, for example, as 25613721 + 79530724 = 5061^2 + 8918^2 .

It is not a de Polignac number, because 105144445 - 2³ = 105144437 is a prime.

It is a super-2 number, since 2×105144445² = 22110708628716050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214336 + ... + 214825.

It is an arithmetic number, because the mean of its divisors is an integer number (12231117).

Almost surely, 2^105144445 is an apocalyptic number.

It is an amenable number.

105144445 is a deficient number, since it is larger than the sum of its proper divisors (41628959).

105144445 is an equidigital number, since it uses as much as digits as its factorization.

105144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429180 (or 429173 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 105144445 is about 10253.9965379358. The cubic root of 105144445 is about 471.9856313853.

Adding to 105144445 its reverse (544441501), we get a palindrome (649585946).

The spelling of 105144445 in words is "one hundred five million, one hundred forty-four thousand, four hundred forty-five".