285243653 has 2 divisors, whose sum is σ = 285243654. Its totient is φ = 285243652.

The previous prime is 285243649. The next prime is 285243659. The reversal of 285243653 is 356342582.

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., 257859364 + 27384289 = 16058^2 + 5233^2 .

It is a cyclic number.

It is not a de Polignac number, because 285243653 - 2² = 285243649 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285243659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142621826 + 142621827.

It is an arithmetic number, because the mean of its divisors is an integer number (142621827).

Almost surely, 2^285243653 is an apocalyptic number.

It is an amenable number.

285243653 is a deficient number, since it is larger than the sum of its proper divisors (1).

285243653 is an equidigital number, since it uses as much as digits as its factorization.

285243653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 38.

The square root of 285243653 is about 16889.1578534870. The cubic root of 285243653 is about 658.2719202375.

The spelling of 285243653 in words is "two hundred eighty-five million, two hundred forty-three thousand, six hundred fifty-three".