285209053 has 2 divisors, whose sum is σ = 285209054. Its totient is φ = 285209052.

The previous prime is 285208991. The next prime is 285209069. The reversal of 285209053 is 350902582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279625284 + 5583769 = 16722^2 + 2363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285209053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285207053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142604526 + 142604527.

It is an arithmetic number, because the mean of its divisors is an integer number (142604527).

Almost surely, 2^285209053 is an apocalyptic number.

It is an amenable number.

285209053 is a deficient number, since it is larger than the sum of its proper divisors (1).

285209053 is an equidigital number, since it uses as much as digits as its factorization.

285209053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 285209053 is about 16888.1334966301. The cubic root of 285209053 is about 658.2453030757.

It can be divided in two parts, 28520 and 9053, that added together give a palindrome (37573).

The spelling of 285209053 in words is "two hundred eighty-five million, two hundred nine thousand, fifty-three".