78813255 has 16 divisors (see below), whose sum is σ = 126382464. Its totient is φ = 41940000.

The previous prime is 78813227. The next prime is 78813257. The reversal of 78813255 is 55231887.

It is not a de Polignac number, because 78813255 - 2⁸ = 78812999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78813257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1380 + ... + 12630.

It is an arithmetic number, because the mean of its divisors is an integer number (7898904).

Almost surely, 2^78813255 is an apocalyptic number.

78813255 is a deficient number, since it is larger than the sum of its proper divisors (47569209).

78813255 is a wasteful number, since it uses less digits than its factorization.

78813255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11726.

The product of its digits is 67200, while the sum is 39.

The square root of 78813255 is about 8877.6829747407. The cubic root of 78813255 is about 428.7456776361.

The spelling of 78813255 in words is "seventy-eight million, eight hundred thirteen thousand, two hundred fifty-five".