206451101 has 2 divisors, whose sum is σ = 206451102. Its totient is φ = 206451100.

The previous prime is 206451097. The next prime is 206451143. The reversal of 206451101 is 101154602.

206451101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204204100 + 2247001 = 14290^2 + 1499^2 .

It is a cyclic number.

It is not a de Polignac number, because 206451101 - 2² = 206451097 is a prime.

It is a super-2 number, since 2×206451101² = 85244114208224402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206451181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103225550 + 103225551.

It is an arithmetic number, because the mean of its divisors is an integer number (103225551).

Almost surely, 2^206451101 is an apocalyptic number.

It is an amenable number.

206451101 is a deficient number, since it is larger than the sum of its proper divisors (1).

206451101 is an equidigital number, since it uses as much as digits as its factorization.

206451101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 206451101 is about 14368.4063486526. The cubic root of 206451101 is about 591.0248404637.

The spelling of 206451101 in words is "two hundred six million, four hundred fifty-one thousand, one hundred one".