200378257 has 2 divisors, whose sum is σ = 200378258. Its totient is φ = 200378256.

The previous prime is 200378251. The next prime is 200378263. The reversal of 200378257 is 752873002.

It is a balanced prime because it is at equal distance from previous prime (200378251) and next prime (200378263).

It can be written as a sum of positive squares in only one way, i.e., 152547201 + 47831056 = 12351^2 + 6916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200378257 is a prime.

It is not a weakly prime, because it can be changed into another prime (200378251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100189128 + 100189129.

It is an arithmetic number, because the mean of its divisors is an integer number (100189129).

Almost surely, 2^200378257 is an apocalyptic number.

It is an amenable number.

200378257 is a deficient number, since it is larger than the sum of its proper divisors (1).

200378257 is an equidigital number, since it uses as much as digits as its factorization.

200378257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 200378257 is about 14155.5027109601. The cubic root of 200378257 is about 585.1719921881.

The spelling of 200378257 in words is "two hundred million, three hundred seventy-eight thousand, two hundred fifty-seven".