262543 has 2 divisors, whose sum is σ = 262544. Its totient is φ = 262542.

The previous prime is 262541. The next prime is 262553. The reversal of 262543 is 345262.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 262543 - 2¹ = 262541 is a prime.

Together with 262541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262541) 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 as a sum of consecutive naturals, namely, 131271 + 131272.

It is an arithmetic number, because the mean of its divisors is an integer number (131272).

2²⁶²⁵⁴³ is an apocalyptic number.

262543 is a deficient number, since it is larger than the sum of its proper divisors (1).

262543 is an equidigital number, since it uses as much as digits as its factorization.

262543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 22.

The square root of 262543 is about 512.3895002827. The cubic root of 262543 is about 64.0324542429.

The spelling of 262543 in words is "two hundred sixty-two thousand, five hundred forty-three".