105273109 has 4 divisors (see below), whose sum is σ = 106605760. Its totient is φ = 103940460.

The previous prime is 105273097. The next prime is 105273121. The reversal of 105273109 is 901372501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (105273097) and next prime (105273121).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105273109 is a prime.

It is a super-2 number, since 2×105273109² = 22164854957051762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105273409) 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, 666207 + ... + 666364.

It is an arithmetic number, because the mean of its divisors is an integer number (26651440).

Almost surely, 2^105273109 is an apocalyptic number.

It is an amenable number.

105273109 is a deficient number, since it is larger than the sum of its proper divisors (1332651).

105273109 is an equidigital number, since it uses as much as digits as its factorization.

105273109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332650.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 105273109 is about 10260.2684662732. The cubic root of 105273109 is about 472.1780739678.

The spelling of 105273109 in words is "one hundred five million, two hundred seventy-three thousand, one hundred nine".