245222105 has 4 divisors (see below), whose sum is σ = 294266532. Its totient is φ = 196177680.

The previous prime is 245222071. The next prime is 245222119. The reversal of 245222105 is 501222542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501222542 = 2 ⋅250611271.

It can be written as a sum of positive squares in 2 ways, for example, as 63808144 + 181413961 = 7988^2 + 13469^2 .

It is not a de Polignac number, because 245222105 - 2²⁶ = 178113241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24522206 + ... + 24522215.

It is an arithmetic number, because the mean of its divisors is an integer number (73566633).

Almost surely, 2^245222105 is an apocalyptic number.

It is an amenable number.

245222105 is a deficient number, since it is larger than the sum of its proper divisors (49044427).

245222105 is an equidigital number, since it uses as much as digits as its factorization.

245222105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49044426.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 245222105 is about 15659.5691192319. The cubic root of 245222105 is about 625.9215035954.

Adding to 245222105 its reverse (501222542), we get a palindrome (746444647).

The spelling of 245222105 in words is "two hundred forty-five million, two hundred twenty-two thousand, one hundred five".