85778059 has 2 divisors, whose sum is σ = 85778060. Its totient is φ = 85778058.

The previous prime is 85778057. The next prime is 85778081. The reversal of 85778059 is 95087758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85778059 - 2¹ = 85778057 is a prime.

Together with 85778057, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85778057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42889029 + 42889030.

It is an arithmetic number, because the mean of its divisors is an integer number (42889030).

Almost surely, 2^85778059 is an apocalyptic number.

85778059 is a deficient number, since it is larger than the sum of its proper divisors (1).

85778059 is an equidigital number, since it uses as much as digits as its factorization.

85778059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 49.

The square root of 85778059 is about 9261.6445084013. The cubic root of 85778059 is about 441.0204603469.

The spelling of 85778059 in words is "eighty-five million, seven hundred seventy-eight thousand, fifty-nine".