105561101 has 4 divisors (see below), whose sum is σ = 108135804. Its totient is φ = 102986400.

The previous prime is 105561091. The next prime is 105561121. The reversal of 105561101 is 101165501.

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 1623076 + 103938025 = 1274^2 + 10195^2 .

It is a cyclic number.

It is not a de Polignac number, because 105561101 - 2¹⁸ = 105298957 is a prime.

It is a super-2 number, since 2×105561101² = 22286292088664402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105561121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1287290 + ... + 1287371.

It is an arithmetic number, because the mean of its divisors is an integer number (27033951).

Almost surely, 2^105561101 is an apocalyptic number.

It is an amenable number.

105561101 is a deficient number, since it is larger than the sum of its proper divisors (2574703).

105561101 is an equidigital number, since it uses as much as digits as its factorization.

105561101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574702.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 105561101 is about 10274.2932117007. The cubic root of 105561101 is about 472.6082556653.

The spelling of 105561101 in words is "one hundred five million, five hundred sixty-one thousand, one hundred one".