253543 has 2 divisors, whose sum is σ = 253544. Its totient is φ = 253542.

The previous prime is 253537. The next prime is 253553. The reversal of 253543 is 345352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253543 - 2¹⁷ = 122471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253553) 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 as a sum of consecutive naturals, namely, 126771 + 126772.

It is an arithmetic number, because the mean of its divisors is an integer number (126772).

2²⁵³⁵⁴³ is an apocalyptic number.

253543 is a deficient number, since it is larger than the sum of its proper divisors (1).

253543 is an equidigital number, since it uses as much as digits as its factorization.

253543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 22.

The square root of 253543 is about 503.5305353204. The cubic root of 253543 is about 63.2922509808.

Adding to 253543 its reverse (345352), we get a palindrome (598895).

Subtracting 253543 from its reverse (345352), we obtain a square (91809 = 303²).

The spelling of 253543 in words is "two hundred fifty-three thousand, five hundred forty-three".