105559091 has 4 divisors (see below), whose sum is σ = 115155384. Its totient is φ = 95962800.

The previous prime is 105559087. The next prime is 105559147. The reversal of 105559091 is 190955501.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 105559091 - 2² = 105559087 is a prime.

It is a super-2 number, since 2×105559091² = 22285443385492562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105559021) 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, 4798130 + ... + 4798151.

It is an arithmetic number, because the mean of its divisors is an integer number (28788846).

Almost surely, 2^105559091 is an apocalyptic number.

105559091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

105559091 is a deficient number, since it is larger than the sum of its proper divisors (9596293).

105559091 is an equidigital number, since it uses as much as digits as its factorization.

105559091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9596292.

The product of its (nonzero) digits is 10125, while the sum is 35.

The square root of 105559091 is about 10274.1953942876. The cubic root of 105559091 is about 472.6052559851.

The spelling of 105559091 in words is "one hundred five million, five hundred fifty-nine thousand, ninety-one".