78005353 has 6 divisors (see below), whose sum is σ = 79191546. Its totient is φ = 76836672.

The previous prime is 78005321. The next prime is 78005359. The reversal of 78005353 is 35350087.

It can be written as a sum of positive squares in only one way, i.e., 48553024 + 29452329 = 6968^2 + 5427^2 .

It is not a de Polignac number, because 78005353 - 2⁵ = 78005321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78005359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4200 + ... + 13177.

It is an arithmetic number, because the mean of its divisors is an integer number (13198591).

Almost surely, 2^78005353 is an apocalyptic number.

It is an amenable number.

78005353 is a deficient number, since it is larger than the sum of its proper divisors (1186193).

78005353 is an equidigital number, since it uses as much as digits as its factorization.

78005353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17511 (or 17444 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 78005353 is about 8832.0639150767. The cubic root of 78005353 is about 427.2756421094.

The spelling of 78005353 in words is "seventy-eight million, five thousand, three hundred fifty-three".