78550085 has 16 divisors (see below), whose sum is σ = 99480000. Its totient is φ = 59377536.

The previous prime is 78550079. The next prime is 78550093. The reversal of 78550085 is 58005587.

It is a cyclic number.

It is not a de Polignac number, because 78550085 - 2⁸ = 78549829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46577 + ... + 48233.

It is an arithmetic number, because the mean of its divisors is an integer number (6217500).

Almost surely, 2^78550085 is an apocalyptic number.

It is an amenable number.

78550085 is a deficient number, since it is larger than the sum of its proper divisors (20929915).

78550085 is a wasteful number, since it uses less digits than its factorization.

78550085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180.

The product of its (nonzero) digits is 56000, while the sum is 38.

The square root of 78550085 is about 8862.8485827075. The cubic root of 78550085 is about 428.2679287997.

The spelling of 78550085 in words is "seventy-eight million, five hundred fifty thousand, eighty-five".