285953 has 2 divisors, whose sum is σ = 285954. Its totient is φ = 285952.

The previous prime is 285949. The next prime is 285977. The reversal of 285953 is 359582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258064 + 27889 = 508^2 + 167^2 .

It is a cyclic number.

It is not a de Polignac number, because 285953 - 2² = 285949 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (285983) 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, 142976 + 142977.

It is an arithmetic number, because the mean of its divisors is an integer number (142977).

2²⁸⁵⁹⁵³ is an apocalyptic number.

It is an amenable number.

285953 is a deficient number, since it is larger than the sum of its proper divisors (1).

285953 is an equidigital number, since it uses as much as digits as its factorization.

285953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 285953 is about 534.7457339708. The cubic root of 285953 is about 65.8817134448.

The spelling of 285953 in words is "two hundred eighty-five thousand, nine hundred fifty-three".