245567 has 4 divisors (see below), whose sum is σ = 280656. Its totient is φ = 210480.

The previous prime is 245563. The next prime is 245587. The reversal of 245567 is 765542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245567 - 2² = 245563 is a prime.

It is a d-powerful number, because it can be written as 2³ + 4 + 5⁵ + 5⁷ + 6⁶ + 7⁶ .

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245561) 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, 17534 + ... + 17547.

It is an arithmetic number, because the mean of its divisors is an integer number (70164).

2²⁴⁵⁵⁶⁷ is an apocalyptic number.

245567 is a deficient number, since it is larger than the sum of its proper divisors (35089).

245567 is an equidigital number, since it uses as much as digits as its factorization.

245567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35088.

The product of its digits is 8400, while the sum is 29.

The square root of 245567 is about 495.5471723257. The cubic root of 245567 is about 62.6214810580.

The spelling of 245567 in words is "two hundred forty-five thousand, five hundred sixty-seven".