285497 has 2 divisors, whose sum is σ = 285498. Its totient is φ = 285496.

The previous prime is 285473. The next prime is 285517. The reversal of 285497 is 794582.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219961 + 65536 = 469^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 285497 - 2⁶ = 285433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (285457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142748 + 142749.

It is an arithmetic number, because the mean of its divisors is an integer number (142749).

2²⁸⁵⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

285497 is a deficient number, since it is larger than the sum of its proper divisors (1).

285497 is an equidigital number, since it uses as much as digits as its factorization.

285497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 285497 is about 534.3191929924. The cubic root of 285497 is about 65.8466750008.

The spelling of 285497 in words is "two hundred eighty-five thousand, four hundred ninety-seven".