285251441 has 2 divisors, whose sum is σ = 285251442. Its totient is φ = 285251440.

The previous prime is 285251419. The next prime is 285251471. The reversal of 285251441 is 144152582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277389025 + 7862416 = 16655^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 285251441 - 2¹⁰ = 285250417 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 285251398 and 285251407.

It is not a weakly prime, because it can be changed into another prime (285251401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142625720 + 142625721.

It is an arithmetic number, because the mean of its divisors is an integer number (142625721).

Almost surely, 2^285251441 is an apocalyptic number.

It is an amenable number.

285251441 is a deficient number, since it is larger than the sum of its proper divisors (1).

285251441 is an equidigital number, since it uses as much as digits as its factorization.

285251441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12800, while the sum is 32.

The square root of 285251441 is about 16889.3884140309. The cubic root of 285251441 is about 658.2779111100.

The spelling of 285251441 in words is "two hundred eighty-five million, two hundred fifty-one thousand, four hundred forty-one".