200550391 has 2 divisors, whose sum is σ = 200550392. Its totient is φ = 200550390.

The previous prime is 200550379. The next prime is 200550431. The reversal of 200550391 is 193055002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200550391 - 2²⁷ = 66332663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200550331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100275195 + 100275196.

It is an arithmetic number, because the mean of its divisors is an integer number (100275196).

Almost surely, 2^200550391 is an apocalyptic number.

200550391 is a deficient number, since it is larger than the sum of its proper divisors (1).

200550391 is an equidigital number, since it uses as much as digits as its factorization.

200550391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 200550391 is about 14161.5815147885. The cubic root of 200550391 is about 585.3395073128.

The spelling of 200550391 in words is "two hundred million, five hundred fifty thousand, three hundred ninety-one".