285056539 has 2 divisors, whose sum is σ = 285056540. Its totient is φ = 285056538.

The previous prime is 285056533. The next prime is 285056543. The reversal of 285056539 is 935650582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285056539 - 2³ = 285056531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 285056495 and 285056504.

It is not a weakly prime, because it can be changed into another prime (285056531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142528269 + 142528270.

It is an arithmetic number, because the mean of its divisors is an integer number (142528270).

Almost surely, 2^285056539 is an apocalyptic number.

285056539 is a deficient number, since it is larger than the sum of its proper divisors (1).

285056539 is an equidigital number, since it uses as much as digits as its factorization.

285056539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 43.

The square root of 285056539 is about 16883.6174737525. The cubic root of 285056539 is about 658.1279511157.

The spelling of 285056539 in words is "two hundred eighty-five million, fifty-six thousand, five hundred thirty-nine".