78855059 has 2 divisors, whose sum is σ = 78855060. Its totient is φ = 78855058.

The previous prime is 78855037. The next prime is 78855067. The reversal of 78855059 is 95055887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78855059 - 2⁸ = 78854803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78855019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39427529 + 39427530.

It is an arithmetic number, because the mean of its divisors is an integer number (39427530).

Almost surely, 2^78855059 is an apocalyptic number.

78855059 is a deficient number, since it is larger than the sum of its proper divisors (1).

78855059 is an equidigital number, since it uses as much as digits as its factorization.

78855059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504000, while the sum is 47.

The square root of 78855059 is about 8880.0371057783. The cubic root of 78855059 is about 428.8214691016.

The spelling of 78855059 in words is "seventy-eight million, eight hundred fifty-five thousand, fifty-nine".