105217073 has 4 divisors (see below), whose sum is σ = 113310708. Its totient is φ = 97123440.

The previous prime is 105217061. The next prime is 105217103. The reversal of 105217073 is 370712501.

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 13191424 + 92025649 = 3632^2 + 9593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105217073 is a prime.

It is a super-2 number, since 2×105217073² = 22141264901374658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105217873) 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, 4046798 + ... + 4046823.

It is an arithmetic number, because the mean of its divisors is an integer number (28327677).

Almost surely, 2^105217073 is an apocalyptic number.

105217073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

105217073 is a deficient number, since it is larger than the sum of its proper divisors (8093635).

105217073 is an equidigital number, since it uses as much as digits as its factorization.

105217073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8093634.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 105217073 is about 10257.5373750233. The cubic root of 105217073 is about 472.0942802784.

Adding to 105217073 its reverse (370712501), we get a palindrome (475929574).

The spelling of 105217073 in words is "one hundred five million, two hundred seventeen thousand, seventy-three".