105550001 has 4 divisors (see below), whose sum is σ = 106222452. Its totient is φ = 104877552.

The previous prime is 105549989. The next prime is 105550037. The reversal of 105550001 is 100055501.

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 27050401 + 78499600 = 5201^2 + 8860^2 .

It is a cyclic number.

It is not a de Polignac number, because 105550001 - 2¹⁸ = 105287857 is a prime.

It is a super-2 number, since 2×105550001² = 22281605422200002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105550051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335990 + ... + 336303.

It is an arithmetic number, because the mean of its divisors is an integer number (26555613).

Almost surely, 2^105550001 is an apocalyptic number.

It is an amenable number.

105550001 is a deficient number, since it is larger than the sum of its proper divisors (672451).

105550001 is an equidigital number, since it uses as much as digits as its factorization.

105550001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672450.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 105550001 is about 10273.7530143565. The cubic root of 105550001 is about 472.5916897919.

The spelling of 105550001 in words is "one hundred five million, five hundred fifty thousand, one".