284868253 has 2 divisors, whose sum is σ = 284868254. Its totient is φ = 284868252.

The previous prime is 284868223. The next prime is 284868281. The reversal of 284868253 is 352868482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284866884 + 1369 = 16878^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 284868253 - 2¹³ = 284860061 is a prime.

It is a super-2 number, since 2×284868253² = 162299843134544018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284868223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142434126 + 142434127.

It is an arithmetic number, because the mean of its divisors is an integer number (142434127).

Almost surely, 2^284868253 is an apocalyptic number.

It is an amenable number.

284868253 is a deficient number, since it is larger than the sum of its proper divisors (1).

284868253 is an equidigital number, since it uses as much as digits as its factorization.

284868253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 737280, while the sum is 46.

The square root of 284868253 is about 16878.0405557043. The cubic root of 284868253 is about 657.9830166254.

The spelling of 284868253 in words is "two hundred eighty-four million, eight hundred sixty-eight thousand, two hundred fifty-three".