245765105 has 4 divisors (see below), whose sum is σ = 294918132. Its totient is φ = 196612080.

The previous prime is 245765101. The next prime is 245765119. The reversal of 245765105 is 501567542.

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 139901584 + 105863521 = 11828^2 + 10289^2 .

It is not a de Polignac number, because 245765105 - 2² = 245765101 is a prime.

It is a super-2 number, since 2×245765105² = 120800973671322050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245765101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24576506 + ... + 24576515.

It is an arithmetic number, because the mean of its divisors is an integer number (73729533).

Almost surely, 2^245765105 is an apocalyptic number.

It is an amenable number.

245765105 is a deficient number, since it is larger than the sum of its proper divisors (49153027).

245765105 is an equidigital number, since it uses as much as digits as its factorization.

245765105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49153026.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 245765105 is about 15676.8971738670. The cubic root of 245765105 is about 626.3831596662.

The spelling of 245765105 in words is "two hundred forty-five million, seven hundred sixty-five thousand, one hundred five".