245307 has 4 divisors (see below), whose sum is σ = 327080. Its totient is φ = 163536.

The previous prime is 245299. The next prime is 245317. The reversal of 245307 is 703542.

It is a happy number.

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

It is not a de Polignac number, because 245307 - 2³ = 245299 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 245307.

It is not an unprimeable number, because it can be changed into a prime (245317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40882 + ... + 40887.

It is an arithmetic number, because the mean of its divisors is an integer number (81770).

2²⁴⁵³⁰⁷ is an apocalyptic number.

245307 is a deficient number, since it is larger than the sum of its proper divisors (81773).

245307 is an equidigital number, since it uses as much as digits as its factorization.

245307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81772.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 245307 is about 495.2847665737. The cubic root of 245307 is about 62.5993725844.

Adding to 245307 its reverse (703542), we get a palindrome (948849).

The spelling of 245307 in words is "two hundred forty-five thousand, three hundred seven".