105044445 has 160 divisors (see below), whose sum is σ = 232087680. Its totient is φ = 44789760.

The previous prime is 105044441. The next prime is 105044449. The reversal of 105044445 is 544440501.

It is an interprime number because it is at equal distance from previous prime (105044441) and next prime (105044449).

It is not a de Polignac number, because 105044445 - 2² = 105044441 is a prime.

It is a super-2 number, since 2×105044445² = 22068670850716050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105044441) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1438929 + ... + 1439001.

It is an arithmetic number, because the mean of its divisors is an integer number (1450548).

Almost surely, 2^105044445 is an apocalyptic number.

105044445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105044445 is an abundant number, since it is smaller than the sum of its proper divisors (127043235).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105044445 is a wasteful number, since it uses less digits than its factorization.

105044445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 105044445 is about 10249.1192304510. The cubic root of 105044445 is about 471.8359530575.

Adding to 105044445 its reverse (544440501), we get a palindrome (649484946).

The spelling of 105044445 in words is "one hundred five million, forty-four thousand, four hundred forty-five".