285056543 has 2 divisors, whose sum is σ = 285056544. Its totient is φ = 285056542.

The previous prime is 285056539. The next prime is 285056557. The reversal of 285056543 is 345650582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285056543 - 2² = 285056539 is a prime.

It is a super-2 number, since 2×285056543² = 162514465414221698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 285056497 and 285056506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285056533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142528271 + 142528272.

It is an arithmetic number, because the mean of its divisors is an integer number (142528272).

Almost surely, 2^285056543 is an apocalyptic number.

285056543 is a deficient number, since it is larger than the sum of its proper divisors (1).

285056543 is an equidigital number, since it uses as much as digits as its factorization.

285056543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 285056543 is about 16883.6175922105. The cubic root of 285056543 is about 658.1279541941.

The spelling of 285056543 in words is "two hundred eighty-five million, fifty-six thousand, five hundred forty-three".