105520417 has 4 divisors (see below), whose sum is σ = 106454340. Its totient is φ = 104586496.

The previous prime is 105520399. The next prime is 105520421. The reversal of 105520417 is 714025501.

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 42302016 + 63218401 = 6504^2 + 7951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105520417 is a prime.

It is a super-2 number, since 2×105520417² = 22269116807707778, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105520391 and 105520400.

It is not an unprimeable number, because it can be changed into a prime (105520477) 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, 466792 + ... + 467017.

It is an arithmetic number, because the mean of its divisors is an integer number (26613585).

Almost surely, 2^105520417 is an apocalyptic number.

It is an amenable number.

105520417 is a deficient number, since it is larger than the sum of its proper divisors (933923).

105520417 is an equidigital number, since it uses as much as digits as its factorization.

105520417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933922.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 105520417 is about 10272.3131280155. The cubic root of 105520417 is about 472.5475323346.

Adding to 105520417 its reverse (714025501), we get a palindrome (819545918).

The spelling of 105520417 in words is "one hundred five million, five hundred twenty thousand, four hundred seventeen".