204857371 has 2 divisors, whose sum is σ = 204857372. Its totient is φ = 204857370.

The previous prime is 204857369. The next prime is 204857377. The reversal of 204857371 is 173758402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204857371 - 2¹ = 204857369 is a prime.

Together with 204857369, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 204857371.

It is not a weakly prime, because it can be changed into another prime (204857377) 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 as a sum of consecutive naturals, namely, 102428685 + 102428686.

It is an arithmetic number, because the mean of its divisors is an integer number (102428686).

Almost surely, 2^204857371 is an apocalyptic number.

204857371 is a deficient number, since it is larger than the sum of its proper divisors (1).

204857371 is an equidigital number, since it uses as much as digits as its factorization.

204857371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 204857371 is about 14312.8393758890. The cubic root of 204857371 is about 589.5000754174.

The spelling of 204857371 in words is "two hundred four million, eight hundred fifty-seven thousand, three hundred seventy-one".