105500245 has 4 divisors (see below), whose sum is σ = 126600300. Its totient is φ = 84400192.

The previous prime is 105500233. The next prime is 105500251. The reversal of 105500245 is 542005501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542005501 = 617 ⋅878453.

It can be written as a sum of positive squares in 2 ways, for example, as 57183844 + 48316401 = 7562^2 + 6951^2 .

It is a cyclic number.

It is not a de Polignac number, because 105500245 - 2²⁵ = 71945813 is a prime.

It is a super-2 number, since 2×105500245² = 22260603390120050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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, 10550020 + ... + 10550029.

It is an arithmetic number, because the mean of its divisors is an integer number (31650075).

Almost surely, 2^105500245 is an apocalyptic number.

It is an amenable number.

105500245 is a deficient number, since it is larger than the sum of its proper divisors (21100055).

105500245 is an equidigital number, since it uses as much as digits as its factorization.

105500245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21100054.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 105500245 is about 10271.3312184935. The cubic root of 105500245 is about 472.5174186164.

Adding to 105500245 its reverse (542005501), we get a palindrome (647505746).

The spelling of 105500245 in words is "one hundred five million, five hundred thousand, two hundred forty-five".