253843 has 4 divisors (see below), whose sum is σ = 254968. Its totient is φ = 252720.

The previous prime is 253823. The next prime is 253853. The reversal of 253843 is 348352.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 253843 - 2⁵ = 253811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253823) 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, 93 + ... + 718.

It is an arithmetic number, because the mean of its divisors is an integer number (63742).

2²⁵³⁸⁴³ is an apocalyptic number.

253843 is a deficient number, since it is larger than the sum of its proper divisors (1125).

253843 is an equidigital number, since it uses as much as digits as its factorization.

253843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124.

The product of its digits is 2880, while the sum is 25.

The square root of 253843 is about 503.8283437839. The cubic root of 253843 is about 63.3172042646.

The spelling of 253843 in words is "two hundred fifty-three thousand, eight hundred forty-three".