78050197 has 2 divisors, whose sum is σ = 78050198. Its totient is φ = 78050196.

The previous prime is 78050191. The next prime is 78050209. The reversal of 78050197 is 79105087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51279921 + 26770276 = 7161^2 + 5174^2 .

It is a cyclic number.

It is not a de Polignac number, because 78050197 - 2⁷ = 78050069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78050191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39025098 + 39025099.

It is an arithmetic number, because the mean of its divisors is an integer number (39025099).

Almost surely, 2^78050197 is an apocalyptic number.

It is an amenable number.

78050197 is a deficient number, since it is larger than the sum of its proper divisors (1).

78050197 is an equidigital number, since it uses as much as digits as its factorization.

78050197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 78050197 is about 8834.6022547707. The cubic root of 78050197 is about 427.3575043475.

The spelling of 78050197 in words is "seventy-eight million, fifty thousand, one hundred ninety-seven".