105961811 has 4 divisors (see below), whose sum is σ = 105990192. Its totient is φ = 105933432.

The previous prime is 105961777. The next prime is 105961837. The reversal of 105961811 is 118169501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118169501 = 947 ⋅124783.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105961811 is a prime.

It is a super-2 number, since 2×105961811² = 22455810780799442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105961111) 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, 7556 + ... + 16401.

It is an arithmetic number, because the mean of its divisors is an integer number (26497548).

Almost surely, 2^105961811 is an apocalyptic number.

105961811 is a deficient number, since it is larger than the sum of its proper divisors (28381).

105961811 is an equidigital number, since it uses as much as digits as its factorization.

105961811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28380.

The product of its (nonzero) digits is 2160, while the sum is 32.

The square root of 105961811 is about 10293.7753521242. The cubic root of 105961811 is about 473.2055076486.

The spelling of 105961811 in words is "one hundred five million, nine hundred sixty-one thousand, eight hundred eleven".