200255021 has 2 divisors, whose sum is σ = 200255022. Its totient is φ = 200255020.

The previous prime is 200254981. The next prime is 200255039. The reversal of 200255021 is 120552002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126810121 + 73444900 = 11261^2 + 8570^2 .

It is a cyclic number.

It is not a de Polignac number, because 200255021 - 2¹⁰ = 200253997 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 (200255621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100127510 + 100127511.

It is an arithmetic number, because the mean of its divisors is an integer number (100127511).

Almost surely, 2^200255021 is an apocalyptic number.

It is an amenable number.

200255021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200255021 is an equidigital number, since it uses as much as digits as its factorization.

200255021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 200255021 is about 14151.1491052847. The cubic root of 200255021 is about 585.0520040457.

The spelling of 200255021 in words is "two hundred million, two hundred fifty-five thousand, twenty-one".