206200551 has 4 divisors (see below), whose sum is σ = 274934072. Its totient is φ = 137467032.

The previous prime is 206200549. The next prime is 206200567. The reversal of 206200551 is 155002602.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 206200551 - 2¹ = 206200549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206200571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34366756 + ... + 34366761.

It is an arithmetic number, because the mean of its divisors is an integer number (68733518).

Almost surely, 2^206200551 is an apocalyptic number.

206200551 is a deficient number, since it is larger than the sum of its proper divisors (68733521).

206200551 is an equidigital number, since it uses as much as digits as its factorization.

206200551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68733520.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 206200551 is about 14359.6849199417. The cubic root of 206200551 is about 590.7856535286.

The spelling of 206200551 in words is "two hundred six million, two hundred thousand, five hundred fifty-one".