245791 has 16 divisors (see below), whose sum is σ = 314944. Its totient is φ = 186624.

The previous prime is 245789. The next prime is 245821. The reversal of 245791 is 197542.

245791 = 6³ + 7³ + ... + 31³.

It is a happy number.

245791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 8-Lehmer number, since φ(245791) divides (245791-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 245791 - 2¹ = 245789 is a prime.

245791 is an undulating number in base 9.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3331 + ... + 3403.

It is an arithmetic number, because the mean of its divisors is an integer number (19684).

2²⁴⁵⁷⁹¹ is an apocalyptic number.

245791 is a deficient number, since it is larger than the sum of its proper divisors (69153).

245791 is a wasteful number, since it uses less digits than its factorization.

245791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130.

The product of its digits is 2520, while the sum is 28.

The square root of 245791 is about 495.7731336004. The cubic root of 245791 is about 62.6405158480.

The spelling of 245791 in words is "two hundred forty-five thousand, seven hundred ninety-one".