78715255 has 8 divisors (see below), whose sum is σ = 94523472. Its totient is φ = 62928768.

The previous prime is 78715213. The next prime is 78715267. The reversal of 78715255 is 55251787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78715255 - 2⁷ = 78715127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4047 + ... + 13183.

It is an arithmetic number, because the mean of its divisors is an integer number (11815434).

Almost surely, 2^78715255 is an apocalyptic number.

78715255 is a deficient number, since it is larger than the sum of its proper divisors (15808217).

78715255 is a wasteful number, since it uses less digits than its factorization.

78715255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10865.

The product of its digits is 98000, while the sum is 40.

The square root of 78715255 is about 8872.1617996968. The cubic root of 78715255 is about 428.5678966111.

The spelling of 78715255 in words is "seventy-eight million, seven hundred fifteen thousand, two hundred fifty-five".