78863051 has 4 divisors (see below), whose sum is σ = 83502072. Its totient is φ = 74224032.

The previous prime is 78863041. The next prime is 78863077. The reversal of 78863051 is 15036887.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78863051 - 2²² = 74668747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78862996 and 78863014.

It is not an unprimeable number, because it can be changed into a prime (78863041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2319485 + ... + 2319518.

It is an arithmetic number, because the mean of its divisors is an integer number (20875518).

Almost surely, 2^78863051 is an apocalyptic number.

78863051 is a deficient number, since it is larger than the sum of its proper divisors (4639021).

78863051 is a wasteful number, since it uses less digits than its factorization.

78863051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639020.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 78863051 is about 8880.4870924967. The cubic root of 78863051 is about 428.8359557029.

The spelling of 78863051 in words is "seventy-eight million, eight hundred sixty-three thousand, fifty-one".