105054109 has 4 divisors (see below), whose sum is σ = 107036316. Its totient is φ = 103071904.

The previous prime is 105054083. The next prime is 105054113. The reversal of 105054109 is 901450501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25452025 + 79602084 = 5045^2 + 8922^2 .

It is a cyclic number.

It is not a de Polignac number, because 105054109 - 2¹⁷ = 104923037 is a prime.

It is a super-2 number, since 2×105054109² = 22072731635567762, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105054119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991024 + ... + 991129.

It is an arithmetic number, because the mean of its divisors is an integer number (26759079).

Almost surely, 2^105054109 is an apocalyptic number.

It is an amenable number.

105054109 is a deficient number, since it is larger than the sum of its proper divisors (1982207).

105054109 is an equidigital number, since it uses as much as digits as its factorization.

105054109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982206.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 105054109 is about 10249.5906747538. The cubic root of 105054109 is about 471.8504221165.

The spelling of 105054109 in words is "one hundred five million, fifty-four thousand, one hundred nine".