78576255 has 12 divisors (see below), whose sum is σ = 136198920. Its totient is φ = 41907312.

The previous prime is 78576241. The next prime is 78576307. The reversal of 78576255 is 55267587.

78576255 is a `hidden beast` number, since 78 + 576 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 78576255 - 2¹² = 78572159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1746139 = 78576255 / (7 + 8 + 5 + 7 + 6 + 2 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 78576255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 873025 + ... + 873114.

It is an arithmetic number, because the mean of its divisors is an integer number (11349910).

Almost surely, 2^78576255 is an apocalyptic number.

78576255 is a deficient number, since it is larger than the sum of its proper divisors (57622665).

78576255 is a wasteful number, since it uses less digits than its factorization.

78576255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746150 (or 1746147 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 78576255 is about 8864.3248473869. The cubic root of 78576255 is about 428.3154845609.

The spelling of 78576255 in words is "seventy-eight million, five hundred seventy-six thousand, two hundred fifty-five".