78889051 has 2 divisors, whose sum is σ = 78889052. Its totient is φ = 78889050.

The previous prime is 78889037. The next prime is 78889073. The reversal of 78889051 is 15098887.

It is a weak prime.

It is an emirp because it is prime and its reverse (15098887) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78889051 - 2⁷ = 78888923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 78888992 and 78889010.

It is not a weakly prime, because it can be changed into another prime (78889081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39444525 + 39444526.

It is an arithmetic number, because the mean of its divisors is an integer number (39444526).

Almost surely, 2^78889051 is an apocalyptic number.

78889051 is a deficient number, since it is larger than the sum of its proper divisors (1).

78889051 is an equidigital number, since it uses as much as digits as its factorization.

78889051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 78889051 is about 8881.9508555272. The cubic root of 78889051 is about 428.8830775157.

The spelling of 78889051 in words is "seventy-eight million, eight hundred eighty-nine thousand, fifty-one".