285005953 has 2 divisors, whose sum is σ = 285005954. Its totient is φ = 285005952.

The previous prime is 285005927. The next prime is 285005977. The reversal of 285005953 is 359500582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262991089 + 22014864 = 16217^2 + 4692^2 .

It is a cyclic number.

It is not a de Polignac number, because 285005953 - 2⁵ = 285005921 is a prime.

It is not a weakly prime, because it can be changed into another prime (285005923) 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, 142502976 + 142502977.

It is an arithmetic number, because the mean of its divisors is an integer number (142502977).

Almost surely, 2^285005953 is an apocalyptic number.

It is an amenable number.

285005953 is a deficient number, since it is larger than the sum of its proper divisors (1).

285005953 is an equidigital number, since it uses as much as digits as its factorization.

285005953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 285005953 is about 16882.1193278569. The cubic root of 285005953 is about 658.0890184532.

It can be divided in two parts, 28500 and 5953, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 285005953 in words is "two hundred eighty-five million, five thousand, nine hundred fifty-three".