245893 has 4 divisors (see below), whose sum is σ = 256608. Its totient is φ = 235180.

The previous prime is 245881. The next prime is 245897. The reversal of 245893 is 398542.

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 not a de Polignac number, because 245893 - 2¹³ = 237701 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4 + 8⁵ + 5⁵ + 9² + 3¹¹ .

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245897) 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, 5323 + ... + 5368.

It is an arithmetic number, because the mean of its divisors is an integer number (64152).

2²⁴⁵⁸⁹³ is an apocalyptic number.

245893 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

245893 is a deficient number, since it is larger than the sum of its proper divisors (10715).

245893 is a wasteful number, since it uses less digits than its factorization.

245893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10714.

The product of its digits is 8640, while the sum is 31.

The square root of 245893 is about 495.8759925627. The cubic root of 245893 is about 62.6491796436.

The spelling of 245893 in words is "two hundred forty-five thousand, eight hundred ninety-three".