245801 has 4 divisors (see below), whose sum is σ = 256512. Its totient is φ = 235092.

The previous prime is 245789. The next prime is 245821. The reversal of 245801 is 108542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245801 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 245801.

It is not an unprimeable number, because it can be changed into a prime (245821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5321 + ... + 5366.

It is an arithmetic number, because the mean of its divisors is an integer number (64128).

2²⁴⁵⁸⁰¹ is an apocalyptic number.

It is an amenable number.

245801 is a deficient number, since it is larger than the sum of its proper divisors (10711).

245801 is a wasteful number, since it uses less digits than its factorization.

245801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10710.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 245801 is about 495.7832187559. The cubic root of 245801 is about 62.6413653457.

The spelling of 245801 in words is "two hundred forty-five thousand, eight hundred one".