245943 has 8 divisors (see below), whose sum is σ = 364400. Its totient is φ = 163944.

The previous prime is 245941. The next prime is 245963. The reversal of 245943 is 349542.

It is not a de Polignac number, because 245943 - 2¹ = 245941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9109 = 245943 / (2 + 4 + 5 + 9 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4528 + ... + 4581.

It is an arithmetic number, because the mean of its divisors is an integer number (45550).

2²⁴⁵⁹⁴³ is an apocalyptic number.

245943 is a deficient number, since it is larger than the sum of its proper divisors (118457).

245943 is an equidigital number, since it uses as much as digits as its factorization.

245943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118 (or 9112 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 245943 is about 495.9264058305. The cubic root of 245943 is about 62.6534257272.

The spelling of 245943 in words is "two hundred forty-five thousand, nine hundred forty-three".