285263851 has 2 divisors, whose sum is σ = 285263852. Its totient is φ = 285263850.

The previous prime is 285263833. The next prime is 285263857. The reversal of 285263851 is 158362582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285263851 - 2⁹ = 285263339 is a prime.

It is not a weakly prime, because it can be changed into another prime (285263857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142631925 + 142631926.

It is an arithmetic number, because the mean of its divisors is an integer number (142631926).

Almost surely, 2^285263851 is an apocalyptic number.

285263851 is a deficient number, since it is larger than the sum of its proper divisors (1).

285263851 is an equidigital number, since it uses as much as digits as its factorization.

285263851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 40.

The square root of 285263851 is about 16889.7558004845. The cubic root of 285263851 is about 658.2874572030.

The spelling of 285263851 in words is "two hundred eighty-five million, two hundred sixty-three thousand, eight hundred fifty-one".