245317165 has 4 divisors (see below), whose sum is σ = 294380604. Its totient is φ = 196253728.

The previous prime is 245317159. The next prime is 245317181. The reversal of 245317165 is 561713542.

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 59567524 + 185749641 = 7718^2 + 13629^2 .

It is a cyclic number.

It is not a de Polignac number, because 245317165 - 2⁵ = 245317133 is a prime.

It is a super-2 number, since 2×245317165² = 120361022887274450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245317165.

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, 24531712 + ... + 24531721.

It is an arithmetic number, because the mean of its divisors is an integer number (73595151).

Almost surely, 2^245317165 is an apocalyptic number.

It is an amenable number.

245317165 is a deficient number, since it is larger than the sum of its proper divisors (49063439).

245317165 is an equidigital number, since it uses as much as digits as its factorization.

245317165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49063438.

The product of its digits is 25200, while the sum is 34.

The square root of 245317165 is about 15662.6040299817. The cubic root of 245317165 is about 626.0023723401.

The spelling of 245317165 in words is "two hundred forty-five million, three hundred seventeen thousand, one hundred sixty-five".