78352471 has 2 divisors, whose sum is σ = 78352472. Its totient is φ = 78352470.

The previous prime is 78352457. The next prime is 78352501. The reversal of 78352471 is 17425387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78352471 - 2⁷ = 78352343 is a prime.

It is a super-3 number, since 3×78352471³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 78352471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78352441) 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, 39176235 + 39176236.

It is an arithmetic number, because the mean of its divisors is an integer number (39176236).

Almost surely, 2^78352471 is an apocalyptic number.

78352471 is a deficient number, since it is larger than the sum of its proper divisors (1).

78352471 is an equidigital number, since it uses as much as digits as its factorization.

78352471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 78352471 is about 8851.6931148792. The cubic root of 78352471 is about 427.9084859076.

The spelling of 78352471 in words is "seventy-eight million, three hundred fifty-two thousand, four hundred seventy-one".