200028557 has 2 divisors, whose sum is σ = 200028558. Its totient is φ = 200028556.

The previous prime is 200028533. The next prime is 200028559. The reversal of 200028557 is 755820002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199685161 + 343396 = 14131^2 + 586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200028557 is a prime.

It is a super-2 number, since 2×200028557² = 80022847231004498, which contains 22 as substring.

Together with 200028559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200028559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100014278 + 100014279.

It is an arithmetic number, because the mean of its divisors is an integer number (100014279).

Almost surely, 2^200028557 is an apocalyptic number.

It is an amenable number.

200028557 is a deficient number, since it is larger than the sum of its proper divisors (1).

200028557 is an equidigital number, since it uses as much as digits as its factorization.

200028557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 200028557 is about 14143.1452301106. The cubic root of 200028557 is about 584.8313800428.

Adding to 200028557 its reverse (755820002), we get a palindrome (955848559).

The spelling of 200028557 in words is "two hundred million, twenty-eight thousand, five hundred fifty-seven".