78504203 has 4 divisors (see below), whose sum is σ = 79609968. Its totient is φ = 77398440.

The previous prime is 78504193. The next prime is 78504211. The reversal of 78504203 is 30240587.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30240587 = 13 ⋅2326199.

It is a cyclic number.

It is not a de Polignac number, because 78504203 - 2⁴ = 78504187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78504253) 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 in 3 ways as a sum of consecutive naturals, for example, 552776 + ... + 552917.

It is an arithmetic number, because the mean of its divisors is an integer number (19902492).

Almost surely, 2^78504203 is an apocalyptic number.

78504203 is a deficient number, since it is larger than the sum of its proper divisors (1105765).

78504203 is a wasteful number, since it uses less digits than its factorization.

78504203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105764.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 78504203 is about 8860.2597591718. The cubic root of 78504203 is about 428.1845271661.

The spelling of 78504203 in words is "seventy-eight million, five hundred four thousand, two hundred three".