78571373 has 2 divisors, whose sum is σ = 78571374. Its totient is φ = 78571372.

The previous prime is 78571343. The next prime is 78571393. The reversal of 78571373 is 37317587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69438889 + 9132484 = 8333^2 + 3022^2 .

It is a cyclic number.

It is not a de Polignac number, because 78571373 - 2⁶ = 78571309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78571373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78571343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39285686 + 39285687.

It is an arithmetic number, because the mean of its divisors is an integer number (39285687).

Almost surely, 2^78571373 is an apocalyptic number.

It is an amenable number.

78571373 is a deficient number, since it is larger than the sum of its proper divisors (1).

78571373 is an equidigital number, since it uses as much as digits as its factorization.

78571373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 41.

The square root of 78571373 is about 8864.0494696273. The cubic root of 78571373 is about 428.3066138595.

The spelling of 78571373 in words is "seventy-eight million, five hundred seventy-one thousand, three hundred seventy-three".