105020173 has 2 divisors, whose sum is σ = 105020174. Its totient is φ = 105020172.

The previous prime is 105020143. The next prime is 105020183. The reversal of 105020173 is 371020501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104919049 + 101124 = 10243^2 + 318^2 .

It is a cyclic number.

It is not a de Polignac number, because 105020173 - 2²¹ = 102923021 is a prime.

It is a super-2 number, since 2×105020173² = 22058473473899858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105020173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105020143) 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 as a sum of consecutive naturals, namely, 52510086 + 52510087.

It is an arithmetic number, because the mean of its divisors is an integer number (52510087).

Almost surely, 2^105020173 is an apocalyptic number.

It is an amenable number.

105020173 is a deficient number, since it is larger than the sum of its proper divisors (1).

105020173 is an equidigital number, since it uses as much as digits as its factorization.

105020173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 105020173 is about 10247.9350602939. The cubic root of 105020173 is about 471.7996088083.

Adding to 105020173 its reverse (371020501), we get a palindrome (476040674).

The spelling of 105020173 in words is "one hundred five million, twenty thousand, one hundred seventy-three".