78112259 has 2 divisors, whose sum is σ = 78112260. Its totient is φ = 78112258.

The previous prime is 78112253. The next prime is 78112271. The reversal of 78112259 is 95221187.

It is a weak prime.

It is an emirp because it is prime and its reverse (95221187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78112259 - 2⁸ = 78112003 is a prime.

It is a super-2 number, since 2×78112259² = 12203050012166162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78112253) 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, 39056129 + 39056130.

It is an arithmetic number, because the mean of its divisors is an integer number (39056130).

Almost surely, 2^78112259 is an apocalyptic number.

78112259 is a deficient number, since it is larger than the sum of its proper divisors (1).

78112259 is an equidigital number, since it uses as much as digits as its factorization.

78112259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 35.

The square root of 78112259 is about 8838.1139956441. The cubic root of 78112259 is about 427.4707461486.

The spelling of 78112259 in words is "seventy-eight million, one hundred twelve thousand, two hundred fifty-nine".