245143 has 4 divisors (see below), whose sum is σ = 250888. Its totient is φ = 239400.

The previous prime is 245131. The next prime is 245149. The reversal of 245143 is 341542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245143 is a prime.

It is a Duffinian number.

245143 is a lucky number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 245143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245149) 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, 2808 + ... + 2893.

It is an arithmetic number, because the mean of its divisors is an integer number (62722).

2²⁴⁵¹⁴³ is an apocalyptic number.

245143 is a deficient number, since it is larger than the sum of its proper divisors (5745).

245143 is an equidigital number, since it uses as much as digits as its factorization.

245143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744.

The product of its digits is 480, while the sum is 19.

The square root of 245143 is about 495.1191775724. The cubic root of 245143 is about 62.5854192038.

Adding to 245143 its reverse (341542), we get a palindrome (586685).

The spelling of 245143 in words is "two hundred forty-five thousand, one hundred forty-three".