285375823 has 2 divisors, whose sum is σ = 285375824. Its totient is φ = 285375822.

The previous prime is 285375793. The next prime is 285375851. The reversal of 285375823 is 328573582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285375823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285375823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285375523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142687911 + 142687912.

It is an arithmetic number, because the mean of its divisors is an integer number (142687912).

Almost surely, 2^285375823 is an apocalyptic number.

285375823 is a deficient number, since it is larger than the sum of its proper divisors (1).

285375823 is an equidigital number, since it uses as much as digits as its factorization.

285375823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 43.

The square root of 285375823 is about 16893.0702656444. The cubic root of 285375823 is about 658.3735764465.

The spelling of 285375823 in words is "two hundred eighty-five million, three hundred seventy-five thousand, eight hundred twenty-three".