285090011 has 2 divisors, whose sum is σ = 285090012. Its totient is φ = 285090010.

The previous prime is 285089989. The next prime is 285090049. The reversal of 285090011 is 110090582.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285090011 is a prime.

It is not a weakly prime, because it can be changed into another prime (285090511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142545005 + 142545006.

It is an arithmetic number, because the mean of its divisors is an integer number (142545006).

Almost surely, 2^285090011 is an apocalyptic number.

285090011 is a deficient number, since it is larger than the sum of its proper divisors (1).

285090011 is an equidigital number, since it uses as much as digits as its factorization.

285090011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 285090011 is about 16884.6087014180. The cubic root of 285090011 is about 658.1537097444.

The spelling of 285090011 in words is "two hundred eighty-five million, ninety thousand, eleven".