78885255 has 16 divisors (see below), whose sum is σ = 126345600. Its totient is φ = 42029088.

The previous prime is 78885241. The next prime is 78885277. The reversal of 78885255 is 55258887.

It is a happy number.

It is not a de Polignac number, because 78885255 - 2¹⁹ = 78360967 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, 17196 + ... + 21294.

It is an arithmetic number, because the mean of its divisors is an integer number (7896600).

Almost surely, 2^78885255 is an apocalyptic number.

78885255 is a deficient number, since it is larger than the sum of its proper divisors (47460345).

78885255 is a wasteful number, since it uses less digits than its factorization.

78885255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390.

The product of its digits is 896000, while the sum is 48.

The square root of 78885255 is about 8881.7371611639. The cubic root of 78885255 is about 428.8761983765.

The spelling of 78885255 in words is "seventy-eight million, eight hundred eighty-five thousand, two hundred fifty-five".