78493201 has 4 divisors (see below), whose sum is σ = 78744292. Its totient is φ = 78242112.

The previous prime is 78493193. The next prime is 78493211. The reversal of 78493201 is 10239487.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31584400 + 46908801 = 5620^2 + 6849^2 .

It is a cyclic number.

It is not a de Polignac number, because 78493201 - 2³ = 78493193 is a prime.

It is a super-2 number, since 2×78493201² = 12322365206452802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78493211) 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, 125076 + ... + 125701.

It is an arithmetic number, because the mean of its divisors is an integer number (19686073).

Almost surely, 2^78493201 is an apocalyptic number.

It is an amenable number.

78493201 is a deficient number, since it is larger than the sum of its proper divisors (251091).

78493201 is a wasteful number, since it uses less digits than its factorization.

78493201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251090.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 78493201 is about 8859.6388752590. The cubic root of 78493201 is about 428.1645235396.

The spelling of 78493201 in words is "seventy-eight million, four hundred ninety-three thousand, two hundred one".