105511043 has 4 divisors (see below), whose sum is σ = 115102968. Its totient is φ = 95919120.

The previous prime is 105511039. The next prime is 105511067. The reversal of 105511043 is 340115501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340115501 = 11 ⋅30919591.

It is not a de Polignac number, because 105511043 - 2² = 105511039 is a prime.

It is a super-2 number, since 2×105511043² = 22265160389895698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105511543) 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, 4795946 + ... + 4795967.

It is an arithmetic number, because the mean of its divisors is an integer number (28775742).

Almost surely, 2^105511043 is an apocalyptic number.

105511043 is a deficient number, since it is larger than the sum of its proper divisors (9591925).

105511043 is an equidigital number, since it uses as much as digits as its factorization.

105511043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591924.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 105511043 is about 10271.8568428498. The cubic root of 105511043 is about 472.5335388602.

Adding to 105511043 its reverse (340115501), we get a palindrome (445626544).

The spelling of 105511043 in words is "one hundred five million, five hundred eleven thousand, forty-three".