78058755 has 16 divisors (see below), whose sum is σ = 138771360. Its totient is φ = 41631264.

The previous prime is 78058751. The next prime is 78058763. The reversal of 78058755 is 55785087.

It is a happy number.

It is not a de Polignac number, because 78058755 - 2² = 78058751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78058755.

It is not an unprimeable number, because it can be changed into a prime (78058751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288972 + ... + 289241.

It is an arithmetic number, because the mean of its divisors is an integer number (8673210).

Almost surely, 2^78058755 is an apocalyptic number.

78058755 is a deficient number, since it is larger than the sum of its proper divisors (60712605).

78058755 is a wasteful number, since it uses less digits than its factorization.

78058755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578227 (or 578221 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 45.

The square root of 78058755 is about 8835.0865870120. The cubic root of 78058755 is about 427.3731233209.

The spelling of 78058755 in words is "seventy-eight million, fifty-eight thousand, seven hundred fifty-five".