285253253 has 2 divisors, whose sum is σ = 285253254. Its totient is φ = 285253252.

The previous prime is 285253223. The next prime is 285253301. The reversal of 285253253 is 352352582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281501284 + 3751969 = 16778^2 + 1937^2 .

It is a cyclic number.

It is not a de Polignac number, because 285253253 - 2¹⁰ = 285252229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285253223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142626626 + 142626627.

It is an arithmetic number, because the mean of its divisors is an integer number (142626627).

Almost surely, 2^285253253 is an apocalyptic number.

It is an amenable number.

285253253 is a deficient number, since it is larger than the sum of its proper divisors (1).

285253253 is an equidigital number, since it uses as much as digits as its factorization.

285253253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 35.

The square root of 285253253 is about 16889.4420570959. The cubic root of 285253253 is about 658.2793049645.

The spelling of 285253253 in words is "two hundred eighty-five million, two hundred fifty-three thousand, two hundred fifty-three".