105171305 has 4 divisors (see below), whose sum is σ = 126205572. Its totient is φ = 84137040.

The previous prime is 105171293. The next prime is 105171329. The reversal of 105171305 is 503171501.

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 44782864 + 60388441 = 6692^2 + 7771^2 .

It is not a de Polignac number, because 105171305 - 2¹⁴ = 105154921 is a prime.

It is a super-2 number, since 2×105171305² = 22122006790806050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10517126 + ... + 10517135.

It is an arithmetic number, because the mean of its divisors is an integer number (31551393).

Almost surely, 2^105171305 is an apocalyptic number.

It is an amenable number.

105171305 is a deficient number, since it is larger than the sum of its proper divisors (21034267).

105171305 is an equidigital number, since it uses as much as digits as its factorization.

105171305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21034266.

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 105171305 is about 10255.3061875304. The cubic root of 105171305 is about 472.0258188141.

The spelling of 105171305 in words is "one hundred five million, one hundred seventy-one thousand, three hundred five".