240853 has 2 divisors, whose sum is σ = 240854. Its totient is φ = 240852.

The previous prime is 240841. The next prime is 240859. The reversal of 240853 is 358042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142884 + 97969 = 378^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 240853 - 2⁹ = 240341 is a prime.

It is equal to p₂₁₂₈₉ and since 240853 and 21289 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120426 + 120427.

It is an arithmetic number, because the mean of its divisors is an integer number (120427).

2²⁴⁰⁸⁵³ is an apocalyptic number.

It is an amenable number.

240853 is a deficient number, since it is larger than the sum of its proper divisors (1).

240853 is an equidigital number, since it uses as much as digits as its factorization.

240853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 240853 is about 490.7677658526. The cubic root of 240853 is about 62.2181872147.

Adding to 240853 its reverse (358042), we get a palindrome (598895).

The spelling of 240853 in words is "two hundred forty thousand, eight hundred fifty-three".